题目内容

设关系R、S如下图所示,则R+S=______。

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听力原文:W: It's surprising that Tom came out of the accident alive.
M: That's true. The car crashed into the wall and was completely damaged.
Q: What was the consequence of the accident?
(19)

A. Tom survived the accident.
B. Tom was killed in the accident.
C. Someone saved Tom's life.
D. It did little damage to Tom's car.

为委托人保守商业秘密是房地产经纪人的义务。()

A. 正确
B. 错误

1砖墙的厚度尺寸为490mm。()

A. 正确
B. 错误

【C3】

A. set about
B. set aside
C. set off
D. set up

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