题目内容

With the evolution, human beings may sleep more.

A. Right
B. Wrong
C. Not mentioned

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听力原文：W: Do you know if Judy's around？ She's supposed to go swimming with us today.
M: Well, her bathing suit is here on the chair.
Q: What do we know about Judy？
(17)

A. She should clean up herself.
B. She forgot to bring her bathing suit.
C. She might be already swimming.
D. She is likely to be nearby.

收入-费用=利润，这个收入、费用和利润之间的恒等式关系，反映了一定期间内企业的财务状况。()

A. 正确
B. 错误

不归零编码用电平的(21)编码，曼彻斯特编码是用电平的(22)来表示的。
(65)

A. 高低
B. 跳变
C. 转换
D. 强弱

A．Drawing graphs.B．Giving presentations.C．Having a class discussion.D．Taking an examin

A. Drawing graphs.
B. Giving presentations.
C. Having a class discussion.
D. Taking an examination.