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问题 解答题

一名潜水员在水下方80米处发现一条鲨鱼在离他不远处的上方25米的位置往下游追逐猎物，当它向下游42米后追上猎物，此时猎物垂死挣扎，立刻反向上游，鲨鱼紧紧尾随，又游了10米后被鲨鱼一口吞吃.

（1）求鲨鱼吃掉猎物时所在的位置；

（2）与刚开始潜水员发现鲨鱼的位置相比，鲨鱼的位置有什么变化？

答案

解：（1 ）鲨鱼在水下方87 米处吃掉猎物；

（2 ）鲨鱼向下游了32 米.      

阅读理解

One day in March ,1964, Alaska began to shake . There was a great earthquake .It was the biggest earthquake the country ever had .

Shops and houses fell down . One street dropped 30 feet. One island rose about 11 metres into the air . Parts of the sea bottom became dry land . People felt the earthquake hundreds of kilometers away .

Each year there are many earthquakes . Most of them are small . They happen in different parts of the world . We are not sure what makes them . But if you are near , you can see the earth move . You may see a big crack (裂缝) in the ground . Sometimes the land drops on one side of the crack . There is a new hill . The old world has a new shape (形状).

根据短文判断下列句子正(T)误(F).

小题1:The strongest earthquake in Alaska happened in April 1967.

小题2:The word“earthquake”in the story means a strong shaking or moving of the ground .

小题3:The story wants to tell us earthquakes changed the land .

小题4:From the story we know earthquakes happen in small countries .

小题5:From this story we can see earthquakes often do a lot of harm .
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单项选择题

宏观经济管理的首要任务是( )。

A．保持总供给与总需求的基本平衡

B．全面建设小康社会

C．促进经济社会可持续发展

D．促进经济增长
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