单项选择题

Modern appliances ______ us from a good deal of household work. For instance, the dryer frees us from hanging the laundry.

A. escape
B. benefit
C. liberate
D. comfort
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单项选择题
In order to be a good scientist, ______.
A. mathematics is urgent
B. one should have the mathematics
C. one must understand mathematics
D. mathematics is important to be understood
单项选择题
According to official statistics, retail sales in China rose 10% and 12.2% in the first and the second quarter ______ this year.
A. accordingly
B. correspondingly
C. respectively
D. individually
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