A.They took the order even without being rewarded. |
B.They took the order only when rewarded. |
C.They turned a deaf ear to repeated orders. |
D.They hesitated longer when given repeated orders. |
A.originated from Range’s research on dogs. |
B.showed that animals do pay attention to inequity. |
C.began the argument that only humans are aware of inequity. |
D.was conducted to find out how monkeys reacted to humans’ orders. |
A.was given less work. |
B.was given more food. |
C.was given the same type of food. |
D.was given more delicious food. |
A.care more about whether they are rewarded. |
B.care less about what they are rewarded with. |
C.care more about what they are ordered to do. |
D.care less about who gives them orders. |
A.Animals have various ways to show their anger. |
B.Dogs are less intelligent than monkeys. |
C.Dogs have a sense of fairness. |
D.Most animals want to be rewarded equally. |
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A.to explain the definition of self-confidence |
B.to explain the secret of self-confidence |
C.to tell people how important self-confidence is |
D.to tell people how to build self-confidence |
A.the secret of self-confidence |
B.the skill of self-confidence |
C.the style of doing things |
D.a(chǎn) rewarding career |
A.to be confident means to have no disadvantages |
B.taking full advantage of your physical characters will help you be confident |
C.your unique characters will help you be confident and be successful |
D.to be confident means to be beautiful |
A.not to be afraid of failure |
B.dress yourself properly |
C.pretend to know everything |
D.make your advantages more obvious |
A.Praising others for their strong points |
B.Always following others’ advice to do things |
C.Giving up blaming your weaknesses |
D.Believing in yourself |
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A.The engineering solutions to water resource and their limitation. |
B.The challenge for the future. |
C.The basic means of controlling water. |
D.The challenge for developing crops. |
A.Water resource should be used more reasonably. |
B.More dams should be built in river basins. |
C.More wetlands should be protected from destruction. |
D.More dry-land crops could be developed in Africa. |
A.The ecological destruction will be known to the public by researchers |
B.The ecological destruction will no longer be a problem in the future |
C.The future is an information age |
D.Governments will face greater challenge in the future |
A.fewer fish | B.less grazing land |
C.less floodplain agriculture | D.less farming land |
A.No one will invest in developing locally appropriate crops in Africa |
B.Researchers have no interest in developing dry-land crops |
C.Research on locally appropriate crops in the Third World may be profitable |
D.There is less water resource in the Third World |
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A.ordinary items never say “New and Improved” or “All Natural” |
B.ordinary products are usually cheaper than famous brands |
C.producers spend less money on packaging of ordinary items |
D.the quality of ordinary items is usually as good as that of famous brands |
A.They are believable. | B.They are attractive. |
C.They are full of misinformation. | D.They are helpful to consumers. |
A.to make use of ads |
B.not to buy items with words like “New and Improved” or “All Natural” |
C.to buy high quality items such as famous brands after lunch |
D.to buy any ordinary items instead of famous brands |
A.going into the supermarket hungry, you may buy more than you plan to |
B.the quality of ordinary items is usually high and the prices are relatively low |
C.discount clothing stores are good places to go to |
D.a(chǎn)ds sometimes don’t tell the truth |
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A.in space | B.in the atmosphere |
C.a(chǎn)bove the ground | D.a(chǎn)bove space |
A.the weather satellites can do it easily |
B.clouds form there |
C.the weather forms there |
D.the pictures can forecast the weather |
A.when they have received satellite pictures |
B.a(chǎn)fter they have compared new satellite pictures with earlier ones |
C.before they received satellite pictures |
D.during they study satellite pictures |
A.taking pictures of the atmosphere |
B.receiving pictures of the atmosphere |
C.doing other work in many ways |
D.weather forecasting |
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A.Only from left to right. | B.Only from right to left. |
C.From both directions at the same time | D.From one direction at a time |
A.is as long as the River Danube |
B.can be easily placed on the head of a pin |
C.is coded with and alphabet of four letters |
D.is smart enough to read and take photos of itself |
A.specialists in the field | B.general readers |
C.natural scientists | D.readers with academic background |
A.to focus on the differences between the two |
B.to lay emphasis on the similarities between the two |
C.to simplify the concept of the human genome |
D.to give an exact description of the human genome |
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A.A group of scientists. | B.Calls of Campbell’s monkeys. |
C.The lifestyle of monkeys. | D.The importance of language. |
A.don’t communicate by sounds |
B.only understand simple sentences |
C.fail to learn language from humans |
D.a(chǎn)re not related to the Campbell’s monkeys |
A.Krak | B.Boom | C.Boom boom krak-oo krak-oo krak-oo | D.Krak-oo |
A.Zuberbuhler has spent years in the forests |
B.the writer isn’t sure of Zuberbuhler’s opinions |
C.the Campbell’s monkeys are cleverer than other animals |
D.the Campbell’s monkeys can express six meanings by calls |
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A.since 1980 | B.since last winter |
C.for more than 20 years | D.for about one year |
A.do a lot of good to human beings in many ways |
B.protect humans from diseases caused by bad weather |
C.do a lot of harm to human beings in the summer-time |
D.protect humans from harmful levels of ultraviolet radiation |
A.a(chǎn)bove Arctic during the winter in the mid-1980s |
B.a(chǎn)bove Antarctica during the winter in the mid-1980s |
C.over somewhere in the north of the equator in 1980 |
D.over the USA in the summertime in the mid-1980s |
A.the changeable weather | B.ozone-destroying chemicals |
C.chemicals from refrigerators | D.chemicals from air conditioners |
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A.a(chǎn)ir pollution has been becoming more and more serious in recent years |
B.a(chǎn)ir pollution like acid rain and smog is threatening people's health |
C.a(chǎn)ir pollutants in a city can travel in the sky and affect nearby areas |
D.a(chǎn)ir pollutants stay in fixed places over the cities |
A.123 to 115 km |
B.137 to 145 km |
C.123 to 145 km |
D.115 to 137 km |
A.to inform readers of the damage caused by air pollution |
B.to introduce the new plan to control air pollution |
C.to provide official figures of air pollution levels |
D.to point out the regions affected by air pollution |
A.The major pollutants. |
B.The key polluted areas. |
C.The major polluted cities. |
D.The pollution levels. |
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