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【判断题】
光化学烟雾是大气中氮氧化物和碳氢化合物在紫外线照射下反应生成的多种污染物的混合物。A.
正确
B.
错误
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举一反三
【单选题】Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. After each conversation, there are some recorded questions. The ...
A.
He couldn't go to the art exhibition.
B.
He had a slight temperature.
C.
He thought he'd better stay in bed.
D.
He was told to take good care of himself.
【单选题】-Mr. Johnson asked me to remind you of the meeting this afternoon. Don’t forget it! -OK, I ___ .
A.
won't
B.
don’t
C.
will
D.
do
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