单项选择题

A. To find out how much air can be pumped into a plane.
B. To find out how much air passengers need to breathe at certain altitudes.
C. To find what would happen if the plane crashed in the water.
D. To find out if there are any weak parts in the plane that would burst under pressure.
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单项选择题
A. The meaning of facial expressions depends on situations. B. Facial expressions can cause misunderstanding across culture. C. People from one culture may lack facial expressions because they experience less emotion. D. Facial expressions may disguise true feelings.
A. The meaning of facial expressions depends on situations.
B. Facial expressions can cause misunderstanding across culture.
C. People from one culture may lack facial expressions because they experience less emotion.
D. Facial expressions may disguise true feelings.
单项选择题
A. She doesn’t want to pay the late fee. B. She was given incorrect information.C. She can’t afford to pay her tuition. D. She didn’t pass her mathematics class last semester.
A. She doesn’t want to pay the late fee.
B. She was given incorrect information.
C. She can’t afford to pay her tuition.
D. She didn’t pass her mathematics class last semester.
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