单项选择题

Reform and opening-up have brought about profound changes to the lives of the Chinese.

A．drastic
B．dense
C．diverse
D．digital
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单项选择题
Many elephants were known to have perished of their wounds when there were no nature reserves.
A．died
B．treated
C．survived
D．neglected
单项选择题
These classical works have been simplified on behalf of beginners of English.
A．as the representative of
B．in the interest of
C．in the name of
D．in the process of
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