单项选择题

One reason for the successes of Asian immigrants in the U. S. is that they have taken great ______ to educate their children. A. efforts R pains C. attempts D. endeavors
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单项选择题
The government is trying to do something to ______ better understanding between the two countries.
A．raise
B．promote
C．heighten
D．increase
单项选择题
It's a serious crime that people ______ goods out of China to avoid paying customs duty.
A．ship
B．smuggle
C．launch
D．load
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