_____ in 1943 _____ the harmful smog made its appearance in Los Angeles.

试卷相关题目

• 1_____ to completely cut off its oil supply, it would badly damage its own economy.

  A.If Iran was

  B.Was Iran

  C.If Iran is

  D.Were Iran

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• 2China and America are separated by _____.

  A.Pacific Ocean

  B.a Pacific Ocean

  C.the Pacific Ocean

  D.Pacific Oceans

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• 3There _____ a lot of _____ on the roads yesterday.

  A.were...traffic

  B.was...traffic

  C.were...traffics

  D.was...traffics

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• 4An _____ crowd is awaiting the arrival of the famed statesman.

  A.excite

  B.excitedly

  C.excited

  D.exciting

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• 5One main branch of sea science, _____, holds enormous unanswered questions.

  A.physical oceanography

  B.is physical oceanography

  C.called physical oceanography

  D.what is physical oceanography

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• 6The population of Beijing is three times _____ that of Qingdao.

  A.so large as

  B.as large to

  C.as large as

  D.as larger than

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• 7He _____ his office for there was no one to answer the phone.

  A.must have left

  B.must leave

  C.may have left

  D.can have left

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• 8Jane's family couldn't agree on where to spend _____ vacation.

  A.his

  B.her

  C.its

  D.their

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• 9I will leave him a note _____ he will know where we are.

  A.so that

  B.that

  C.in order

  D.in case

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• 10The teacher thinks that Tom _____ for the accident and instead we should try to comfort him.

  A.doesn't blame

  B.is to blame

  C.isn't to blame

  D.isn't blamed

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