单项选择题

If visitors from other planets have actually landed on the earth, one can assume that they came to （）.

A．make war
B．communicate
C．settle clown
D．explore

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单项选择题
Tom went to the cinema because （）.

A．he hoped to get ideas
B．he wanted to avoid a visitor
C．he was feeling lazy
D．he could not finish a story
单项选择题
23（）

A．pleasant
B．hard
C．good
D．bad
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