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单选题

A．They have often proved to be as helpful as doing mental exercise．
B．Taking them with other medications might entail unnecessary risks．
C．Their effect lasts only a short time．
D．Many have benefited from them．

参考答案B

解析:Q：What does the speaker say about memory supplements at the end?
【解析】B。短文中提到，很多时候人们都没有意识到药物会带来的影响，或是和其他药物一起使用时可能会给你带来更大的危险。B是对短文中taking them in combination with other medications might put you at increased risk的同义转述。

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单选题Section C
Directions：In this section．you will hear three recordings of lectures or talks followed by three or four questions．The recordings will be played only once．After you hear a question，you must choose the best answer from the four choices marked A ，B ，C and D ．Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre．
Questions 16 to 18 are based on the recording you have just heard．

A．How catastrophic natural disasters turn out to be to developing nations．
B．How the World Meteorological Organization studies natural disasters．
C．How powerless humans appear to be in face of natural disasters．
D．How the negative impacts of natural disasters can be reduced．

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单选题

A．By training rescue teams for emergencies．
B．By taking steps to prepare people for them．
C．By changing people’s views of nature．
D．By relocating people to safer places．

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单选题

A．How preventive action can reduce the loss of life．
B．How courageous Cubans are in face of disasters．
C．How Cubans suffer from tropical storms．
D．How destructive tropical storms can be．

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