Taking both the movements and the physiological affects of rising temperatures together,the research team concluded that fish body size would shrink between 14% and 24%,with the largest decreases in the Indian and Atlantic oceans.

　　When compared with actual observations of fish sizes,the model seems to underestimate what’s actually happening in the seas.The researchers made actual studies on some kinds of fishes living in the Atlantic Ocean.They found that the recorded data on these fishes showed greater decreases in body size than the models had predicted.

　　1.Which of the following can best function as the title of the passage?

　　A.Global warming may shrink the fish

　　B.Global warming causes fish to move

　　C.Ocean temperatures affect fish distribution

　　D.Ocean temperatures reduce fish population

　　2.The most important factor that affects fish size is . 

　　A.metabolic rate of the fish body

　　B.the level of oxygen in the ocean water

　　C.the normal activities of fish body

　　D.higher pressure in the ocean water

　　3.According to the group,in 20 years,most fish populations will move about . 

　　A.36 kilometres B.70 kilometres

　　C.48 kilometres D.100 kilometres

　　4.The underlined word “underestimate” is most closest in meaning to “”. 

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