单项选择题

Only ten to twenty percent of cold viruses are transmitted by carders, who, sneezing and coughing, ______the viruses into the air.

A．spray
B．sprinkle
C．spread
D．sprout
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单项选择题
High school and college students today are pushed so much in the direction of specialization______ little time is left for the further development of the basic reading skills initiated in earlier years.
A．as
B．so that
C．that
D．therefore
单项选择题
Mobility is one of the characteristics often______ executives, and they must accustom themselves to moving quite regularly.
A．demanded of
B．asked for
C．expected from
D．called for
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