2010年12月英语四级考试模拟试题(4)

refeng

Part I Writing (30 minutes)
　　Directions: For this part, you are allowed 30 minutes to write a composition on the topic: The Importance of keeping A Good Mood. You should write at least 120 words according to the outline given below in Chinese:
　　1. 人们每天都生活在压力之下
　　2. 所以说保持一个好的心情是十分重要的
　　3. 我的观点和原因
　　Part II Reading Comprehension (Skimming and Scanning) (15 minutes)
　　Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1.
　　For questions 1-7, mark
　　Y (for YES) if the statement agrees with the information given in the passage;
　　N (for NO) if the statement contradicts the information given in the passage;
　　NG (for NOT GIVEN) if the information is not given in the passage.
　　For questions 8-10, complete the sentences with the information given in the passage.
　　Gulf Wracked By Katrina's Latest Legacy-Disease, Poisons, Mold
　　A month after Hurricane Katrina tore through the U.S. Gulf Coast, medical experts are now struggling with the latest crisis in the region; contamination(污染).
　　Katrina left New Orleans and other communities tainted with oil, sewage, and possibly poisons leached from federal toxic waste sites, the U.S. Environmental Protection Agency (EPA) says.
　　The pollution, combined with the lack of regular medical services in the region, has raised serious questions about the safety of New Orleans and other coastal towns as people longing for home begin to go back.
　　"I don't think New Orleans is safe for people to return to, from a public health and environmental health standpoint," said Miriam Aschkenasy, an environmental health expert working with Oxfam America in the region.
　　Much of the contamination rests in the brown, filmy sediment(沉淀物) left behind by Katrina's polluted floodwaters.
　　Recent EPA tests of the sediment confirmed high levels of E. coli bacteria, oil and gas chemicals, and lead, as well as varying quantities of arsenic.
　　The health risks posed by the sediment are immediate, experts say, because the sludge(淤泥) is nearly impossible for returning residents to avoid. In New Orleans, it covers every surface that was flooded, from cars and now-dead lawns to the entire contents of flooded homes, stores, hospitals, and schools.
　　"When people come back, they are exposed to the sediment," said Wilma Subra, a chemist from New Iberia, Louisiana, who is analyzing the sediment. "It's in their yards and houses."
　　Old Pollution Resurfacing
　　Plaquemines Parish, a rural county on the peninsula south of New Orleans, is now covered with even more toxic sediment than it was two weeks ago, thanks to Hurricane Rita.
　　"Six inches up to one foot (15 to 30 centimeters) of sludge," Subra reported.
　　Much of the sludge in Plaquemines is the product of nearby bayous and bay bottoms, where sediment was lifted up by Katrina's and Rita's storm surges.
　　The sediment has been polluted over the years with industrial chemicals and heavy metals, said Subra, who tested the sediment for the Southern Mutual Help Association, a nonprofit organization in New Iberia, Louisiana.
　　"These water bodies have received industrial wastes for decades," she said. "This material has toxic chemicals, metals, and organic petrochemicals(石化产品)."
　　Matters have only been made worse by multiple oil spills caused by Katrina and Rita. According to the U.S. Coast Guard, 11 oil spills have occurred in southern Louisiana, totaling 7.4 million gallons (28 million liters) of oil, most of which has been contained.
　　Bacteria levels are also especially high in the Plaquemines sludge, said Rodney Mallett, spokesperson for the Louisiana Department of Environmental Quality.
　　"The sewage treatment plants were underwater," he explained. "Between the animal waste and the human waste, you've got a lot of bacteria."
　　Protection Kits
　　Health and environmental agencies are advising people to avoid contact with the sludge. They recommend that people wear gloves, goggles, and dust masks, and that they wash promptly if exposure occurs.
　　EPA officials are directing people to its Web site (www.epa.gov) to inform themselves of the contamination risks.
　　But most people returning to the area don't have computers to get that information, said Erik Olson, an attorney for the Natural Resources Defense Council, an environmental advocacy group.
　　"If you [do] read the Web site," he added, "you practically have to have a degree in chemistry to understand it."
　　To better inform people of health risks, the Southern Mutual Help Association and Oxfam America are developing a program to give every returning resident a protective kit.
　　Each kit would contain waterproof suits, goggles(风镜), shoe covers, and masks, along with information about potential hazards, Volunteers would give out the kits at the security checkpoints that now stand at the major entrances to affected cities.
　　The groups have made a hundred demonstration kits, which cost about $100 (U.S.) each to produce, and have shown them to state leaders in Louisiana.
　　"The governor is really in favor of this," Subra said. "We just have to determine how we're going to fund them."
　　Toxic Mold Blooms
　　In addition to the toxic sediment, sprawling blooms of mold have now taken hold in many flooded homes. "The mold is growing everywhere-homes are just coated with it," Subra said.
　　The problem has become so widespread that federal health officials warned Wednesday of allergic reactions and toxic responses to the mold. Professionals should be hired to clean mold that covers more than ten square feet (one square meter), they urged.
　　"Those [surfaces] that can't be cleaned need to be removed," said Steven Redd, chief of the Air Pollution and Respiratory Health Branch of the U.S. Centers for Disease Control and Prevention (CDC).
　　The effects of the mold are already surfacing in Mississippi, where respiratory(呼吸的) problems are among the illnesses doctors there are reporting.
　　"We're seeing a lot of asthma from inhaling the mold," said Richard Paat, team leader of a temporary East Biloxi clinic. "And mouth sores from the bad water."
　　Due to contact with unclean water, 33 people in the flood zone have contracted Vibrio infections, according to the CDC. The infections are caused by a family of bacteria that live in contaminated salt water. They can cause serious illness, especially in people with compromised immune systems.
　　To date, six people have died from Vibrio infections.
　　"People had open wound and walked through floodwater with sewage in it," CDC spokesperson Von Roebuck said. "And these folks were having these wounds infected with Vibrio."
　　Disaster Response Care
　　"This is a highly contaminated area," said Susan Briggs, the physician overseeing FEMA's disaster-response medical teams in Louisiana and Alabama.
　　Her teams have been inoculating residents for tetanus and Hepatitis A and B. Hepatitis is a danger when people are exposed to sewage, through water or food, Briggs explained. Tetanus can occur when people cut themselves on unclean materials, as may happen when cleaning debris.
　　The rudimentary(根本的) living conditions in many Katrina-struck areas make it more likely that people will get sick and injured, Briggs said.
　　"They have no electricity, no clean water, no air conditioning," she said. "There are collapsed structures and stray animals. There are huge amounts of stray dogs, and people have been bitten."
　　Briggs and other doctors in the area have been treating many cases of diarrhea, rashes, and upper-respiratory illnesses.
　　All of these conditions are to be expected after natural disasters, according to the CDC. But it's too soon to know if these ailments are related to contamination, the CDC's Roebuck said.
　　"We're looking at that question," he said. "We'd like to know the answer."
　　1. The passage gives a description of the contamination in New Orleans after Hurricane Katrina.
　　2. Katrina left New Orleans and other communities tainted with oil and sewage.
　　3. Plaquemines Parish is now covered with even more toxic sediment that it was two weeks ago.
　　4. People are being advised to avoid contact with the sludge by health and environmental agencies.
　　5. The Southern Mutual Help Association and Oxfam America are developing a program to sell every returning resident a protective kit.
　　6. The conditions in New Orleans after Hurricane Katrina is special.
　　7. In addition to the toxic sediment, sprawling blooms of mold have now taken hold in many flooded homes, and it is growing everywhere.
　　8. To date, six people have died from¬________.
　　9. The rudimentary living conditions in many Katrina-struck areas make it more likely that people will get________.
　　10. All of these conditions are to be expected after________.
Part III Listening Comprehension (35 minutes)
　　Section A
　　Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked [A], [B], [C] and [D], and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
　　11. [A] She refuses to go to dinner.
　　[B] She agrees to go to dinner.
　　[C] She is angry.
　　[D] She is surprised.
　　12. [A] She learns English quickly.
　　[B] Her English isn't very good.
　　[C] Her English is very good.
　　[D] She learns new sentences slowly.
　　13. [A] At a bank.
　　[B] At an inn.
　　[C] On the river side.
　　[D] On a basketball field.
　　14. [A] Go to Paris again.
　　[B] Live in Paris.
　　[C] Go somewhere else.
　　[D] Difficult to say.
　　15. [A] Peter likes to do physical exercise.
　　[B] Peter is absent-minded in class.
　　[C] Peter is a naughty boy.
　　[D] Peter usually walks to class.
　　16. [A] A driving test.
　　[B] A traffic accident.
　　[C] A police movie.
　　[D] The best way to make signals.
　　17. [A] Her sister is a fashionable woman.
　　[B] Her sister is designing a dress.
　　[C] Her sister is studying Spanish.
　　[D] Her sister is in the Philippines.
　　18. [A] She is going to see a movie.
　　[B] She wants to see her friend.
　　[C] She is going to see a film that she has seen before.
　　[D] She is going to find out some information about the film.
　　Questions 19 to 22 are based on the conversation you have just heard.
　　19. [A] A desire to express oneself and display one's wealth.
　　[B] Individual taste and love for beauty.
　　[C] Love for beauty and a desire to impress other people.
　　[D] Individual taste and a desire to express oneself.
　　20. [A] They may be homesick and feel insecure.
　　[B] They are either cold or very sick.
　　[C] They may try to attract other people's attention.
　　[D] They want to protect themselves from physical injuries.
　　21. [A] Green.
　　[B] Yellow.
　　[C] Red.
　　[D] Grey.
　　22. [A] Reporter and fashion designer.
　　[B] Husband and wife.
　　[C] Shop assistant and customer.
　　[D] Teacher and student.
　　Questions 23 to 25 are based on the conversation you have just heard.
　　23. [A] She felt embarrassed in class.
　　[B] Her presentation received a poor grade.
　　[C] She had not completed her assignment.
　　[D] She was unable to attend her psychology class.
　　24. [A] She'd be able to leave quickly.
　　[B] She'd be less nervous.
　　[C] She'd be able to locate where the man was seated.
　　[D] She'd know when her professor arrived.
　　25. [A] They blush more readily than women do.
　　[B] They're uncomfortable when performing in front of adults.
　　[C] They don't respond to stress well.
　　[D] They blush less frequently than adults do.
　　Section B
　　Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked [A], [B], [C] and [D]. Then mark the corresponding letter on Answer Sheet 2 with a single line through the center.
　　Passage One
　　Questions 26 to 28 are based on the passage you have just heard.
　　26. [A] The Black Plague.
　　[B] Enemy of Humanity.
　　[C] Common Animal pests.
　　[D] Causes of World Hunger.
　　27. [A] They eat or spoil crops.
　　[B] They destroy dams and buildings.
　　[C] They attack birds and animals.
　　[D] They carry diseases.
　　28. [A] In India.
　　[B] In Europe.
　　[C] Throughout the world.
　　[D] Both A and B.
　　Passage Two
　　Questions 29 to 31 are based on the passage you have just heard.
　　29. [A] The island of Guam.
　　[B] Yokoi Shoichi's marriage.
　　[C] The battles on Guam during World War II.
　　[D] A Japanese soldier who hid on Guam.
　　30. [A] They met Yokoi Shoichi when he arrived.
　　[B] They went to a department store to meet him.
　　[C] They saw a display of Shoichi's clothing and equipment.
　　[D] They attended Yokoi Shoichi's wedding.
　　31. [A] Because he hated the war.
　　[B] Because he felt shame and dishonor.
　　[C] Because he wanted to stay away from his friends and foes alike.
　　[D] Because he didn't know that Japan had lost the war.
　　Passage Three
　　Questions 32 to 35 are based on the passage you have just heard.
　　32. [A] How to Make Violins.
　　[B] Expensive Violins.
　　[C] Stradivarius's Secret.
　　[D] Italian Violin Makers.
　　33. [A] Hundreds of violins every day.
　　[B] Over 100,000 violins during his career.
　　[C] Only one violin.
　　[D] Hundreds of violins during his career.
　　34. [A] His notes were never found.
　　[B] His notes were left to his sons.
　　[C] His notes were found by other violin makers.
　　[D] There were not any written notes about his secret.
　　35. [A] Special properties of wood of the violin.
　　[B] The shape and construction of the instrument.
　　[C] Different steps involved in the violin's construction.
　　[D] The special coat of paint on the violin
　Section C
　　Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blank, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.
　　More and more Americans are reading their own credit report. Credit reports are (36) ________ by lenders to decide how rrisky it would be to offer a loan or credit to an individual.
　　The report holds information about a person's (37) ________ loans and credit-card debt. It records late (38) ________ of bills and any unpaid loans. It all adds up to a credit history. These days, though, lenders often welcome people with bad credit histories. They are (39) ________ higher interest rates and other loan costs.
　　Some Americans want to read their credit report to know if they have been a (40) ________ of identity theft. They can see if any loans or credit cards have been (41) ________ in their name with stolen personal information.
　　Another reason is that credit reports are not always correct.. They might (42) ________ wrong information or old information.
　　Before 1971, Americans could not see any of this information. One change, in 2001, permits people to see their FICO score. FICO is short for the Fair Isaac (43) ________. (44) __________.
　　Fair Isaac says many lenders not just in the United States but around the world use its technology to create credit scores. (45) _______________________________________________.
　　As of May, the company says it sold ten million credit scores to individuals.
　　(46) ______________________________________________________________________.
　　Paying bills on time and paying off credit-card debt improves credit scores.
　　Part IV Reading Comprehension (Reading in Depth) (25 minutes)
　　Section A
　　Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the center. You may not use any of the words in the bank more than once.
　　Questions 47 to 56 are based on the following passage.
　　Have you ever been afraid to talk back when you were treated ____47 ___? Have you ever bought something just because the salesman talked you into it? Are you afraid to ask someone for a date.
　　Many people are afraid to assert(表现)themselves. Dr. Alberti thinks it's because their self-respect is low. "Our whole ____48 ___ is designed to make people distrust themselves," says Alberti. "There's always '____49 ___' around-a parent, a teacher, a boss-who 'knows better'. These superiors often gain when they chip(削弱) away at your self-image."
　　But Alberti and other scientists are doing something to help people ____50 ___ themselves. They ____51 ___ "assertiveness training" courses-At for short. In the AT courses people learn that they have a right to be themselves. They learn to speak out and feel good about doing so. They learn to be more ____52 ___ without hurting other people.
　　In one way. learning to speak out is to ____53 ___ fear. A group taking a course will help the timid person to lose his fear. But AT uses an even stronger ____54 ___-the need to share. The timid person speaks out in the group because he wants to tell how he feels.
　　Whether or not you speak up for yourself depends on your self-image. If someone you face is more "important" than you, you may feel less of a person. You start to ____55 ___ your own good sense.
　　You go by the other person's ____56___ . But, why should you? AT says you can get to feel good about yourself. And once you do, you can learn to speak out.
　　[A] doubt [I] peace
　　[B] active [J] demand
　　[C] system [K] ask
　　[D] offer [L] superior
　　[E] unfairly [M] overcome
　　[F] unfortunately [N] confidence
　　[G] motive [O] roar
　　[H] image
　　Section B
　　Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked [A], [B], [C] and [D]. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the center.
　　Passage One
　　Question 57 to 61 are based on the following passage.
　　Among all the animals, the ape is most like human beings. Both people and apes have the similar brain structure, the similar nerve system, and the similar kind of blood.
　　There are four kinds of apes: the chimpanzee(黑猩猩), the orangutan(猩猩), the gorilla(大猩猩), and the gibbon(长臂猿). They live in the deep forests and warm tropical regions of Africa and of Southeast Asia, including Indonesia.
　　All apes are covered with brown, reddish-brown, or black hair everywhere on their bodies except their faces, feet, and hands. Their hands each have four fingers and a thumb that helps them grip things the way our thumbs help us. But they also have a thumb on each foot instead of a big toe. Thus they can hold things with their feet also. Having short, weak legs, apes do not walk on the ground very much. However, their arms are very strong. This enables them to swing from branches and travel very quickly from tree to tree.
　　These animals live in small family groups that move from place to place in search of vegetables and fruits. They also eat eggs, small animals, nuts, and insects. When they are tired, they build nests in the trees. But they rarely sleep there for more than a night or two. Then they move on to look for more food.
　　There are some differences among the following three kids of apes. The gibbon is never more than three feet high and weight only about fourteen pounds. The gorilla grows to be six feet tall and weight up to 600 pounds. The orangutan is smaller than the gorilla. It stands three to five feet tall and weight up to 200 pounds.
　　Chimpanzees are the smartest of all apes. They can be taught to sit at a table and eat, to dress themselves, and to do things that human children can do.
　　57. What does the first paragraph tell us?
　　[A] The ape looks like human beings most.
　　[B] People and the ape think alike.
　　[C] People and the ape behave alike.
　　[D] The ape is the most intellectual animal in the world.
　　58. Which of the following sentences is TRUE?
　　[A] All apes are brown or black.
　　[B] All parts of apes' bodies are covered with hair.
　　[C] Apes have weak legs but very strong arms.
　　[D] Apes' arms are strong enough to swim.
　　59. Apes build nests in the trees but seldom sleep there for more than a night or two because ________.
　　[A] They like to live in small family groups
　　[B] They like to move from place to place in search of more food
　　[C] They like to eat eggs, small animals, nuts and insects
　　[D] it rains too often in the deep forests
　　60. Among the three kinds of apes, ________.
　　[A] the gorilla is the biggest
　　[B] the gibbon is only three feet high but it is heavier than the orangutan
　　[C] the orangutan is smaller than the gorilla and cleverer than the gibbon
　　[D] the orangutan can stand up to a great height, but others cannot
　　61. The last paragraph tells us that ________.
　　[A] chimpanzees can do better than human children
　　[B] chimpanzees can do many things that human children cannot do
　　[C] human children can do many things that chimpanzees cannot do
　　[D] the intelligence of chimpanzees is similar to that of human children
　　Passage Two
　　Questions 62 to 66 are based on the following passage.
　　Videodisc holds great promise of helping to meet the needs of American schoolchildren who have problems seeing, hearing, speaking, or socializing. Almost eleven percent of the students aged 3~21 in this country have an impairment that affects their ability to benefit from a regular education program. Handicapped students require special education because they are often markedly different from most children in one or more of the following ways: mentally retarded(发展迟缓的) learning-disabled, emotionally disturbed, deaf, visually handicapped, physically handicapped, or other health impairments. The education of these handicapped children is rewarding but challenging.
　　A special education student usually needs a longer period of time to acquire information. Repetitive teaching techniques are often beneficial, and indefatigable(孜孜不倦的) consistency on the part of the teacher is frequently necessary. Interactive videodisc courseware has characteristics that can be capitalized upon to meet the challenges that special education poses. A videodisc program is infinitely patient. Repetition of any videodisc lesson can continue endlessly, and designers can assure absolute consistency within a program. Most important, according to special educator William Healey of the University of Arizona, is that videodisc "adds an extra dimension of realism for children who need graphic representations."
　　Healey explained that deaf and mentally retarded children especially have difficulty grasping figurative(比喻的)language and higher-order language concepts. He believes that for special education, the power of videodisc lies in the ability of the technology to visually represent language concepts normally taken for granted by non-handicapped persons. Complex figurative language forms such as idioms and metaphors come most readily to mind as being difficult for handicapped learners.
　　62. The special education mentioned in the text is mainly concerned with ________.
　　[A] genius students from day-care centers to colleges
　　[B] students who are fond of computer video games
　　[C] teachers of language in the University of Arizona
　　[D] students who are either mentally or physically disabled
　　63. A videodisc courseware is beneficial to those who have study difficulties because ________.
　　[A] its fancy design is very attractive
　　[B] it allows the user to go back to where he wants to restudy
　　[C] the content of it is healthy and promising
　　[D] it is developed by university professors
　　64. According to Professor Healey, we may infer that mentally retarded children perhaps ________.
　　[A] need graphic representations in order to understand higher-order language concepts
　　[B] are good at studying English idioms but often fail to grasp higher-order language concepts
　　[C] are not very patient with videodisc which helps them to understand the world concepts
　　[D] tend to be deaf as well and have difficulty learning the simple concept "before and after"
　　65. The best phrase that summarizes the main idea of the text is ________.
　　[A] handicapped students and their problems
　　[B] videodisc and special education
　　[C] computer assisted teaching programs
　　[D] normal children and handicapped kids
　　66. The word "impairment" (Line 2, Para. 1) probably means ________.
　　[A] habit
　　[B] disability
　　[C] misconception
　　[D] belief
Part V Cloze (15 minutes)
　　Directions: There are 20 blanks in the following passage. For each blank there are four choices marked [A], [B], [C] and [D] on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the center.
　　Many people wrongly believe that when people reach old age, their families place them in nursing homes. They are left in the ____67 ___ of strangers for the rest of their lives. Their ____68 ___ children visit them only occasionally, but more often, they do not have any ____69___ visitors. The truth is that this idea is an unfortunate myth-an ____70 ___ story. In fact, family members provide over 80 percent of the care ____71 ___ elderly people need. Samuel Preston, a sociologist, studied ____72 ___ the American family is changing. He reported that by the time the ____73 ___ American couple reaches 40 years of age, they have more parents than children. ____74 ___, because people today live longer after an illness than people did years ____75 ___, family members must provide long term care. More psychologists have found that all caregivers ____76 ___ a common characteristic: All caregivers believe that they are the best ____77 ___ for the job. In other words, they all felt that they ____78 ___ do the job better than anyone else. Social workers ____79 ___ caregivers to find out why they took ___ 80 ___ the responsibility of caring for an elderly relative. Many caregivers believed they had ___81 ___ to help their relative. Some stated that helping others ____82 ___ them feel more useful. Others hoped that by helping ____83___ now, they would deserve care when they became old and ____84 ___. Caring for the elderly and being taken care of can be a ____85 ___ satisfying experience for everyone who might be ____86 ___.
　　67. [A] hands [B] arms [C] bodies [D] homes
　　68. [A] growing [B] grown [C] grow [D] grows
　　69. [A] constant [B] lasting [C] regular [D] normal
　　70. [A] imaginary [B] imaginable [C] imaginative [D] imagery
　　71. [A] that [B] this [C] those [D] these
　　72. [A] when [B] how [C] what [D] where
　　73. [A] common [B] ordinary [C] standard [D] average
　　74. [A] Still [B] However [C] Moreover [D] Whereas
　　75. [A] before [B] ago [C] later [D] lately
　　76. [A] share [B] enjoy [C] divide [D] consent
　　77. [A] person [B] people [C] character [D] man
　　78. [A] would [B] will [C] could [D] can
　　79. [A] questioned [B] interviewed [C] inquired [D] interrogate
　　80. [A] in [B] up [C] on [D] off
　　81. [A] admiration [B] initiative [C] necessity [D] obligation
　　82. [A] cause [B] enable [C] make [D] get
　　83. [A] someone [B] anyone [C] everyone [D] anybody
　　84. [A] elderly [B] dependent [C] dependable [D] independent
　　85. [A] similarly [B] differently [C] mutually [D] certainly
　　86. [A] involved [B] excluded [C] included [D] considered
　　Part VI Translation (5 minutes)
　　Directions: Complete the sentences on Answer Sheet 2 by translating into English the Chinese given in brackets.
　　87. ________________________ (幸亏遇到一位好心的出租车司机), Amy arrived at the test room in time.
　　88. ________________________ (这是一个生死攸关的问题) and therefore we must pay more attention to it.
　　89. The problem of internet crime ________________________ (近些年来引起了广泛关注).
　　90. The computer isn't working properly; ________________________ (肯定有什么地方出了毛病).
　　91. ________________________ (应当注意的是) that pollution has become one of the thorniest problems in many big cities.