赞题库-背景图
单项选择题

After the incident the interviewee sounded ______.

A. calm and quiet
B. nervous and numb C. timid and confused D. shocked and angry
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单项选择题According to the relicts, we can infer that domestic animal died because

A. they were horrified.
B. they were suffocated.
C. they were killed by their masters.
D. they had no food.

单项选择题What might avert the danger of the building up of a high concentration of aerosols

A. Nuclear power. B. Fossil fuels. C. Carbon dioxide. D.Atom bombs.