单项选择题

The atmosphere is as much a part of the earth as （） its soils and the water of its lakes, rivers and oceans.

A．has
B．is
C．do
D．are

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单项选择题
（）he will be able to finish the task remains a question.

A．Which
B．As
C．Whether
D．What
单项选择题
The police investigation discovered that three young men were （） in the robbery.

A．caught
B．involved
C．connected
D．included
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