Most experts agree that human activities such as the clearing of large areas of forests, and farming on a large scale _________ the problem of global warming.
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A
is leading to
B
is resulting in
C
are contributing to
D
are owing to
推荐题目
With the college entrance examination approaching，students should________to stay energetic.
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A
work out
B
pull out
C
give out
D
figure out
To keep ______ with the rapid changes of society, the old man keeps the habit of reading newspapers every day.
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A
terms
B
pace
C
progress
D
touch
As nobody here knows what’s wrong with the machine, we must send for an engineer to _______ the problem.
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A
raise
B
face
C
present
D
handle
--Look! The light in the study is still on. --Sorry, I forgot __ it off.
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A
turning
B
turn
C
turned
D
to turn