A．Whether spacemen carry weapons.B．How spacesuits protect spacemen.C．How NASA trains i
A. Whether spacemen carry weapons.
B. How spacesuits protect spacemen.
C. How NASA trains its spacemen.
D. What spacemen eat and drink.
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Which of the following is implied but not stated in the experiment？
A. Diet has nothing to do with health.
B. The amount of food has something to do with health.
C. Health depends on diet totally.
D. Good food has nothing to do with health.
下列关于对债券概念的理解中，正确的一项是()
A. 债券是一种股权凭证
B. 债券是一种债权凭证
C. 债券不具有流通性
D. 债券的风险性一般来说大于股票的风险
A．She wants to get some sleep.B．She needs time to write a paper.C．She has a literature
A. She wants to get some sleep.
B. She needs time to write a paper.
C. She has a literature class to attend.
D. She is troubled by her sleep problem.
A．standardB．baseC．requestD．basis
A. standard
B. base
C. request
D. basis
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