单项选择题

They have developed techniques which are () to those used in most factories.

A. more
B. better
C. greater
D. superior

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()in Beijing for quite a few years, Mr. Park had little difficulty understanding Chinese.

A. Having lived
B. Lived
C. Living
D. To live
单项选择题
The servant () all day and all night.

A. made to work
B. was made to work
C. was made work
D. was made working
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