Why does the author mention the Weddell Sea?
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1 .David Lack’s research contributed to biological science specifically in the area of ____.
A evolution B mating behavior C animal demography D immunology
2 .What does the passage mainly discuss?
A The elements of salt B The bodies of water of the world C The many forms of ocean life D The salinity of ocean water
3 .According to the passage, the ocean generally has more salt in _____.
A coastal areas B tropical areas C rainy areas D turbulent areas
4 .All of the followings are processes that decrease salinity EXEPT ___.
A evaporation B precipitation C run off D melting
5 .Which of the following statements about the salinity of a body of water can best be inferred from the passage?
A The temperature of the water is the most important factor. B How quickly the water moves is directly related to the amount of salt. C Ocean salinity has little effect on sea life. D Various factors combine to cause variations in the salt content of water.
7 .Which of the following statements is NOT true according to the first two paragraphs?
A Many people question the simple human activities of walking and carrying items. B Chimpanzee’s behaviors may suggest why humans walk on two legs. C Human walking upright is viewed as all adaptation to carrying precious resources. D Our ancestors’ ecological conditions resembled those of modem-...
8 .Dr．Richmond conducted the experiment with the purpose of finding____.
A when humans began walking on two legs B what made our ancestors walk upright C what benefits walking upright brought to our ancestors D how walking upright helped chimpanzees monopolize resources
9 .Kyoto University’s study discovered that chimpanzees______.
A regarded both types of nut as priced resources B preferred oil palm nuts to coula nuts C liked coula nuts better than oil palm nuts D ignored both types of nut altogether
10 .Why did the chimpanzees walk on two limbs during Kyoto University’s experiment?
A Because they imitated the human way of walking just for fun. B Because they wanted to please the researchers to get more coula nuts from them. C Because they wanted to get to the nut-rich forest faster by walking that way. D Because they wanted to carry more nut with two free limbs．
