单项选择题

And while we ______ have a great deal of trouble adjusting to a climate that gets 2 degrees centigrade warmer over the next century, an ice age by mid-century--be unimaginably devastating.

A．might, could
B．could, might
C．would, might
D．might, would
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单项选择题
Because it takes longer to install and involves some tinkering to get it to work just right, it's best for more experienced users. But, oh, what joy! ______ a detailed log of every ad it annihilates, ______ it makes a satisfying 'thunk' when it nabs one.
A．Not only Killer keeps, but also
B．Not only does Killer keep, /
C．Only Killer keeps, and
D．Only if Killer keeps, /
单项选择题
He said the most unusual aspect of the Mexican trial was that the 12 teenagers were not given any drugs to suppress their immune systems, ______ would normally destroy any cells from other animals.
A．at which
B．which
C．to which
D．as
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