As we're students, we _______ obey the s

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问题选择题

As we're students, we _______ obey the school rules. [ ]

A. can

B. may

C. must

D. could

答案

答案：C

选择题

Don't judge a person by his _____. We should see what he has done and what he has said. [ ]

A. impression

B. expression

C. look

D. appearance

选择题

在“竹筷提米”的实验中，将竹筷插入玻璃杯的米中，用手提竹筷。当玻璃杯和米被慢慢提起后，玻璃杯受到重力的平衡力是

A．手对竹筷向上的提力

B．米对玻璃杯的摩擦力

C．米对竹筷产生的压力

D．竹筷对米的摩擦力