单项选择题

I am used（）my sleep interrupted.

A. to have
B. having
C. have
D. to having

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单项选择题
The fact remains （）we are behind many others.

A. that
B. why
C. where
D. how
单项选择题
（）, electrons are still smaller.

A. As atoms small are
B. As atoms smaller as
C. Small as atoms are
D. Smaller atoms as are
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