题目内容

They always _____a large supply of tinned food in winter in case they are snowed up.

A. lay in
B. lay off
C. lay over
D. lay out

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It was a long, slow journey that almost _________in disaster.

A. ended in
B. ended up as
C. ended up
D. ended off

You're involved with so many activities this semester that I'm afraid you may _____ yourself.

A. overcharge
B. overload
C. undo
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第一个发现微生物的人是( )

A. 列文虎克
B. 柯赫
C. 巴斯德
D. 斯坦利

德国医生柯赫设计了“曲颈瓶实验”。

A. 对
B. 错