题目内容

The conventional memo has two basic parts:

A. a salutation and a body.
B. a heading and a body.
C. a salutation & a complimentary close
D. subject, audience and purpose

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How can we protect ourselves in daily life?

A. Be careful to make friends.
B. When in danger, call the police.
C. Eat healthy food
Don’t go out at night

The subject of a memo can be:

A. an upcoming event
B. a meeting & a luncheon
C. an update of project progress
D. a business deal

要修炼成PPT高手需要发现乐趣。()

A. 对
B. 错

x→lnx不是单射。()

A. 对
B. 错

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