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【单选题】
听力原文：M: Shall we take our seats now? We can always get some later. W: The lights are about off, but I'd like to buy some ice-cream before the play starts. What does the woman suggest that they should do?A.
Buy some ice-cream.
B.
Wait for the lights to be turned off.
C.
Go immediately to get their seats.
D.
Enjoy the play.
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【单选题】目前常用的3.5英寸软盘片片角上有一带黑滑块的小方口，当小方口被打开时，其作用是______。
A.
只能读不能写
B.
能读又能写
C.
禁止读也禁止写
D.
能写但不能读
【简答题】That old saying “ An apple a day keeps the doctor away ” may hold some truth.In fact , one study found that almost half of the deaths in America caused by heart disease , stroke , and type 2 diabetes(...
【单选题】关于心肺感受器引起的心血管反射的叙述，哪项不正确?
A.
适宜刺激是心脏和血管壁的机械牵张
B.
适宜刺激是PG、缓激肽等化学物质
C.
血压升高是引起心房牵张感受器兴奋的主要因素
D.
心肺感受器受刺激时的反射效应是血压下降
【单选题】(Unit5TextB课文段落) It ’ s true this may help reduce exposure to the temptation of market materialism. Yet, the programs themselves are often the reasons. One study found that the cost of the lifestyles ...
A.
True
B.
Fasle
【简答题】能使机体发生反应的最小刺激强度称为 。
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