单项选择题

According to some scientists, the computer will do much harm to people''s health as smoking and drugs do（）.

A．does much harm ... smoking
B．will do as much harm ... cigarettes
C．will be doing as much harm ... smoking
D．does as much harm ... cigarettes

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单项选择题
The sales manager of the company suggested more money is to spent in a more effective advertising campaign and better packaging design（）.

A．is spending on
B．will be spent in
C．will be spent on
D．be spent on
单项选择题
All root vegetables grow underground, and not all vegetables that grow underground are roots（）.

A．but
B．or
C．as
D．thus
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