题目内容

_____ this has happened on occasion, this is the exception and definitely not the rule .

A. While
B. When
C. What

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下壁心肌梗塞时,典型的梗塞波形出现在:

正常心电图包括以下波和段:

She was too shy to speak____.

A. in public
B. in the public
C. in a public
D. at public

You need to spend plenty of time searching for jobs and treat it____it is a job itself.

A. fo
B. as if
C. as well

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