单项选择题

The pressure _____causes American to be energetic, but it also puts them trader a constant emotional strain.

A．to compete
B．competing
C．to be competed
D．having competed
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单项选择题
By 1929, Mickey Mouse was as popular______ children as Coca-Cola.
A．for
B．in
C．to
D．with
单项选择题
Niagara Falls is a great tourist _____drawing millions of visitors every year.
A．attention
B．attraction
C．appointment
D．arrangement
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