单项选择题

In our highly technological society, the number of jobs for unskilled workers is ______.

A. shrinking
B. obscuring
C. altering
D. constraining
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单项选择题
More than one third of the Chinese in the United States live in California, ______ in San Francisco.
A. previously
B. predominantly
C. practically
D. permanently
单项选择题
The new secretary has written a remarkably ______ report only in a few pages but with all the details.
A. concise
B. clear
C. precise
D. elaborate
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