The U.S. Navy does not consider the triangle as a dangerous zone officially.
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What did the Romans do to dig tunnels for mountain roads?
A. They cracked the rock with fire and cold water.
B. They used explosives to break up the rock.
C. They dug through mountains with machinery.
D. They did it the way we do in modern times.
听力原文:W: Now, would you please fill out these customs forms for each package? Please state clearly the contents and value of each, and the name and address of the returnee. Better in block letters.
M: There. I think I've filled out everything correctly.
What's the woman's occupation?
A doctor.
B. A clerk.
C. a professor.
D. A waitress.
群体教育即是集体教育。()
A. 正确
B. 错误