Part Ⅳ ClozeDirections: In this part, there is a passage with 15 blanks. For each blank there are four choices mrarked A, B, C and D. According to the U. S. National Highway Traffic Safety Administration (NHTSA) , car crashes are the leading cause of death among children between 5 and 14 years of age. Says NHTSA: " (61) 50% of children who die in crashes are unrestrained. In addition, 4 out of 5 children are (62) restrained. " The NHTSA offers a number of safety (63) and cautions for those who are accompanied by children while driving. (64) laws vary from country to country and even from state to state, these guidelines may serve as food for (65) to many parents and guardians of children. The safest place for all children is in the back seat. Infants should be placed in a rear-facing child safety seat in the baekseat of the car. A child (66) a year old and weighing at least 20 pounds may be placed in a forward-facing seat. At 40 pounds, the child can use a "booster seat(儿童案例椅) ", (67) is secured by one of the car’s lap and shoulder belts. At approximately 80 pounds and a (68) of about four feet nine inches, the child may begin using an adult safety strap. Children should not sit in the front passenger seat (69) they are at least 13 years of age. Front- passenger air bags can cause serious (70) to younger children and babies. When a booster seat is used, a lap belt alone will not provide (71) protection if the booster seat does not have a (72) . Do not think that a shoulder belt alone will protect a small child; in the (73) of a crash, the belt may (74) the neck of the child, causing serious injury or even death. Follow instructions closely when (75) and using child seats. According to NHTSA, "even the ’safest’ seat may not protect your child if it isn’t used correctly. "
A. where
B. which
C. that
D. when
Passage Four Scientists are closely concerned with the structure of buildings and with the quality of building materials. The World Health Organization(WHO) observes that the introduction of air conditioning and energy conservation measures have been accompanied by growing problems of indoor air quality. Some pollutants arise from insulation products, some from moving cars, and others from modern housing materials. As many Europeans spend up to 90% of their lives in buildings, the health effects of the indoor climate are very important. Some construction materials, including fiberboard, insulation foams and certain glues for man-made wood floor boards, for example, gives out organic products such as formaldehyde(甲). Heat and humidity increase the release of formaldehyde and the gas seriously harms the eyes. Paint, lacquer, etc. can also release dangerous gas into indoor air. Construction materials can cause serious damage, especially when they contain asbestos(石棉). Asbestos is naturally present in rock formations worldwide. It belongs to a family of mineral substances composed of solid, non-combustible fiber. These properties make asbestos a highly sought-after construction material. As early as 1931, however, public health officers in the United Kingdom revealed the connection between breathing in asbestos dust and such diseases as lung cancer. The land on which a building is sited may also contribute to pollution. Some kinds of granite or similar rocks contain traces of radium(/~i ). As it breaks down, this naturally radioactive element produce some kind of radioactive gas that goes through tiny cracks in walls, floors and building materials, and makes its way into the building and the rooms. The better the homes are insulated, the more is the dangerous gas in indoor air. The main effect of this dangerous gas on health is to increase the risk of lung cancer. Why are Europeans particularly concerned with building materials
A. Lots of building materials there are radioactive.
B. They stay home up to 90% of their lives.
C. They have a high rate of lung cancer.
D. They spend most of their time indoors.
Directions: There are 5 passages in this part. Each passage is followed by six questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Passage One It’s not just your imagination. In cities from coast to coast, the use of Spanish is booming, and is proliferating in ways no other language has before in the U.S. history--other than English of course. It’s this sort of environment that is a cause for concern for many. Mauro Mujica heads a group called "U. S. English," which lobbies for official English laws across the country. He’s concerned that with so many Spanish speakers entering the country, the U.S. will become a nation split by language, much like Canada. "Now we’re beginning to divide ourselves, to split along linguistic lines. We’re beginning to see pockets of people who speak other languages and no English whatsoever. " His fear is hardly universal. Gregory Rodriguez is a fellow with the New America Foundation, a non-partisan think-tank based in Washington, D.C. He calls Mujica’s arguments "ridiculous. " "This process of immigrant enclaves (少数民族聚集地) and linguistic enclaves is an age-old American process. We’ve all heard the quotes from Benjamin Franklin about his concerns that German- Americans would never assimilate. These concerns are as old as the American republic. " Rodriguez argues that the current boom in the use of Spanish is due ahnost entirely to new immigrants, and that their children will, at least for the most part, learn English. He points to 1990 census data, which indicates that by the third generation, two-thirds of all Hispanic children speak English exclusively. Whether that number is going up or down will be difficult to determine since the Census Bureau didn’t track that information in its most recent census. But there may be at least one piece of anecdotal evidence. Spanish-language movie theaters once flourished in the Los Angeles area. There were dozens of these theaters just fifteen years ago. Today there are only seven. "There is a myth that somehow immigrants come to the most powerful nation in the world simply to resist its cultural embrace," says Rodriguez. "But it is a myth. " Immigrant enclaves are, of course, common throughout American History. German and Polish enclaves were common throughout the Midwest. The Italians flourished in New York. But those languages largely faded from use in the U.S. Few are predicting that will happen with Spanish. It’s here to stay, although we won’t know its ultimate impact for generations. The problems caused by immigrants’ speaking their mother tongues ______.
A. are only a recent phenomenon
B. vary with different immigrant groups
C. dated back to the founding of the nation
D. started with the modern immigration system
Passage One Just 30 years ago some 700 million people lived in cities. Today the number stands at 1,800 million, and by the end of the century it will be up to 3,000 million-more than half the world’s estimated population. By the year 2000 an estimated 650 million people will crowd into 60 cities of five million or more-three quarters of them in the developing world. Only a single First World city-metropolitan Tokyo, which will have 24 million people-is expected to be among the global top five; London, ranked second in 1950 with ten million people, will not even make 2000’s top 25. In places where rates of natural population increase exceed three percent annually-meaning much of the Third World-that alone is enough to double a city’s population within 20 years. But equally powerful are the streams of hopeful migrants from the countryside. What faces and confuses urban planners is the huge scale of these trends. There have never been cities of 30 million people, let alone ones dependent on roads, sewer and water supplies barely adequate for urban areas a tenth that size. And the flood of new arrivals in swelling Third World cities far overtakes the supply of jobs-particularly as modem industries put a premium on technology rather than manpower. So it will be virtually impossible to find permanent employment for 30 to 40 percent of the 1,000 million new city inhabitants expected by the year 2000. Despite the terrible conditions that the city newcomers face, their numbers are growing at rates as much as twice that of the cities themselves-and every step taken to improve their living conditions in the slums only attracts more migrants. Which of the following is NOT true according to the passage
A. Over half of the world’s population will move to cities by 2000.
B. The order of the world’s biggest cities will be changed fundamentally by the year 2000.
C. The world population will reach about 6,000 million by 2000.
D. The poor countries will suffer more from the expansion of cities by 2000.