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Tests have proved that caffeine affects the body by increasing the heart rate and rhythm, which______affects the circulatory sys
Tests have proved that caffeine affects the body by increasing the heart rate and rhythm, which______affects the circulatory sys
admin
2015-04-24
22
问题
Tests have proved that caffeine affects the body by increasing the heart rate and rhythm, which______affects the circulatory system.
选项
A、in turn
B、in return
C、turn back
D、as a result
答案
A
解析
介词词组辨析。本题可先排除动词短语turn back“往回走,折返”;而in return表示“作为回报”,用在这里也不对:as a result意为“结果”,句中并没有原因出现,所以不合适。本题谈论咖啡因使心率加快,而心率加快影响循环系统,in turn表示“又(对别人)做同样的事”。故答案为A。
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考博英语
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