单项选择题

When something happens ______ we like, we usually feel joy or happiness, which is a positive and powerful emotion and for which we all strive.

A．upon
B．to
C．that
D．what
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单项选择题
The suspect ______ that he had assaulted a woman.
A．refused
B．rejected
C．declined
D．denied
单项选择题
On the giant plane there are ______ the jet needs.
A．twice engines than
B．twice as engines as
C．as twice many engines as
D．twice as many engines as
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