单项选择题

As China is such a populous country, the present concern for most people is still ______.

A．starches
B．substance
C．sustenance
D．substitute
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单项选择题
Being somewhat short sighted, she had the habit of ______ at people.
A．glancing
B．peering
C．gazing
D．Scanning
单项选择题
The current general slackness of the market has prevented us from ______ new orders with you.
A．placing
B．putting
C．arranging
D．providing
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