世界上第一家孵化器(Incubator)是一种新20世纪50年代创办于()。
参考答案:美国
选一选。
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怀( )尼( )彼( )
款( )慈( )酬( )
—How about going hiking this weekend?
—Sorry, I prefer ___________ rather than ____________.
A. staying at home; go out B. to stay at home; go out C. to go out; stay at home