( C )
On the west side of the island of Manhattan in New York City, tree by tree, leaf by leaf, a 2,500 square foot sector of the Central African Republic’s Dzanga Ndoki Rainforest has been transported to, or recreated at, the American Museum of Natural History’s new hall of biodiversity(生物多样性). When the hall opens this May, visitors will visit one of the world’s biggest and most accurate reproductions of one of nature’s most threatened creations.
To bring the rainforest to New York, a team of nearly two dozen scientists—the largest collecting expedition the museum has ever organized for an exhibit—spent five weeks in the African rainforest collecting soil, plants, and leaves; recording and documenting species; studying trees; shooting videotape and still photos; and interviewing local people. “This area has been explored very little”, says Hoel Cracraft who estimates that the museum will eventually collect 150 to 180 mammals, more than 300 species of birds, hundreds of butterflies, and hundreds of thousands, if not millions, of organisms. The exhibition may even have produced a special prize—scientists suspect they have uncovered several new species.
To give the forest a sense of realness, the back wall of the exhibit is an enormous video screen, sounds will come out from hidden speakers, and plans even call for forest smells. Computer controls will vary the effects so that no two walkthroughs will ever be exactly the same.
After the team returned to New York, the forest was reproduced with the help of the computer. Computer modeling programmes plotted distances and special relationships. Artists studied photos and brought what they saw to life. Plaster trees were made．Recreated animals began to stand in the rainforest of the hall．Flying creatures will hang from the ceiling. The light in the forest, one of the exhibit’s cleverest recreations will seem real. Long tube lights will have the correct colour and temperature to produce a natural effect. The plants and animals exhibited throughout the hall exist naturally in a perfect balance remove one, and the whole is imperfect if not endangered. The exhibit is proof to the hope that the world’s rainforests will never exist solely as a carefully preserved artifact.
72. How did the museum collect the data in the Central African Republic?
A. It sent a large team of scientists there.
B. It cooperated with many African scientists.
C. It hired local people to collect mammals, etc.
D. It sent cameramen to shoot videotapes.
73. To give the forest a sense of realness, all the following are used EXCEPT that _______.
A. hidden loudspeakers are used to produce forest sound
B. a huge video screen is put up on the back wall
C. special equipment is employed to produce forest smells
D. the forest is surrounded by front and back walls
74. What is the main theme of the last paragraph?
A. The layout of the rainforest exhibition.
B. The balance between animals and plants.
C. The clever design of lighting.
D. Preservation of the rainforest exhibition as an artifact.
75. What is this passage mainly about?
A. The history of the American Museum of Natural History.
B. The reproduction of the rainforest at a New York museum.
C. Visitors’ interest in the rainforest reproduction at a New York museum.
D. Saving rainforests in the Central African Republic.
Section C
Directions: Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.
76.
Last Tuesday, I came home from school hot, tired, and starving. I had been through a very tiring day, and all I wanted to do was eat. I opened the refrigerator door and searched for something eatable. Luckily, I chanced to find a piece of leftover pizza from the night before. I put it onto a plate and popped it into my microwave oven. Presto! In less than two minutes, my pizza slice was ready for me to bite into. This modern-day invention, the microwave oven, should be considered one of the “wonders of the world”because it is unbeatable as a food, money, and time saver.
77.
The design of houses can cause accidents. Balconies, fireplaces, staircases, ponds, glass doors or open-plan kitchens can all increase the risk of accidents. Hot water, household chemicals, fireplaces, matches, alcohol and sharp objects are also potential dangers. Loosing balance, clumsiness and being tired or careless can be the reasons for these accidents. What’s more, if you are under stress or when a routine is changed, you may also be under the risk of home accidents.
78.
As a food saver, a microwave oven is definitely hard to beat. Almost any kind of leftover can be reheated in this type of oven, and used properly there is no worry of the food drying out. For example, spaghetti is a mess to try to reheat on top of the stove. It dries out terribly and will stick to the bottom and sides of a saucepan. The spaghetti will also scorch(烧焦) easily if one is not careful. But with a microwave oven, this is a different story with a happier ending. The spaghetti will remain saucy, will not stick, and will not scorch. The Italian food will be as good as it was the first time around.
79.
Another “wonder”about the microwave oven is the money that it saves. Leftovers that would normally be thrown out can be saved and reheated. This saves food; thus, it saves money. Also, these ovens are faster; therefore, they are electricity. In these days that can be a blessing.
79.
Best of all, however, is the time that a microwave oven can save. As a general rule, microwave cooking takes one-third the time that a conventional oven does. Imagine what a delight this would be after a tiring day at work, school, or, better yet, shopping! For instance, to bake a medium-sized potato takes only eight to ten minutes in a microwave oven. So in the time it would take to fry up a hamburger, one could have a hot baked potato to go with it. In addition to speedy cooking, a microwave is wonderful for defrosting (解冻) meat. On low power this oven can defrost any kind of meat in less than fifteen minutes. This is a real lifesaver when company drops in right at dinnertime.
80.
Indeed, microwave ovens should be considered one of the modern wonders of the world. I know that it was a wonder for me last Tuesday. That slice of day-old pizza made me feel like a new man!
Section D
Directions: Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.
The scientists observed that the more junk food the rats ate, the more they wanted to eat – a behavior very similar to that of rats addicted(上了瘾的) to heroin, a dangerous drug. Johnson said the experiment shows that the brain chemistry of obesity(肥胖) and drug addiction may be quite similar.
In their experiment, Johnson and his team studied the “pleasure center” of rats’ brains. The pleasure center is a complicated network of nerve cells. If the animal exercises or eats, the cells reward the animal by releasing chemicals into the body that make it feel good. And when the body feels good, the animal – or person – will want to do the behavior again.
For the experiment, Johnson fed foods like cheesecake to one group of rats. Food like this is high in calories and fat. Another group of rats got a regular diet. The rats that ate junk food started to eat more and more.
“They’re taking in twice the amount of calories as the control rats,” says Paul Kenny, one of Johnson’s colleagues.
Kenny and Johnson wanted to know what was going on in the brains of these rats. They first designed a way to deliver a small electrical charge to the rats’ brains. This electrical charge would stimulate the pleasure centers to release pleasure-causing chemicals. The rats could control how much stimulation – and how much pleasure – they received by running on a wheel. The more the rat ran, the more pleasure it received.
The rats that had been eating junk food started running more and more. This behavior suggested that the junk-food-eating rats needed more brain stimulation to feel good compared with rats on a normal diet. In other words, their pleasure centers were becoming less sensitive and the junk food didn’t make them feel good unless they ate more and more.
Experiments like this one could help scientists understand how chemicals in the brain contribute to obesity. With that information, they may be able to help people avoid obesity in the first place.
(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)
81. The scientists suggested it was actually ___________________ that made the rats feel good.
82. According to the scientists, the reason why rats wanted to eat more and more junk food was that ___________________.
83. How did the scientist know what was happening in the brains of the junk-food-eating rats?
84. What was the purpose of the experiment mentioned in the article?
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