单项选择题

The energy companies ______ urgent studies of the Arctic environment.

A．made
B．put
C．moved
D．launched
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单项选择题
Although I tried to concentrate on the lecture, I was ______ by the outside noise.
A．confused
B．distracted
C．attracted
D．refused
单项选择题
The farmer uses wood to build a house ______ to store grains.
A．with which
B．to which
C．which
D．in which
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