单项选择题

______ what to do, the man telephoned the police.

A. Not known
B. Not knowing
C. Don't know
D. Knowing not
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单项选择题
Generally hosts in the United States do not offer food more than once or twice because they _________.
A. don’t expect you to be hungry
B. expect you to say immediately what you really want
C. expect you to refuse politely
D. expect you to feel at home
单项选择题
What is the main point of the passage
A. Directness is characteristic of American speech.
B. Indirectness is the rule in parts of the Far East.
C. One should learn the unwritten rules of the speech in a culture in order to understand the people.
D. It’s important to use formal and informal speech in daily conversation.
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