If _________ in, viruses can result in illness or even death.

试卷相关题目

• 1Last summer, I went back to my hometown,_________the neighbors and the houses that I used to be familiar with were gone．

  A.only finding

  B.only to find

  C.to find

  D.found

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• 2________ by the policy, he decided to build a new factory.

  A.Being encouraged

  B.Encouraging

  C.Encouraged

  D.Having encouraged

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• 3So many problems ________， he is having a difficult time.

  A.settled

  B.to settle

  C.settling

  D.are to settle

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• 4Earth is believed ______ by an object the size of Mars at some point in the distant past before it’s surface cooled.

  A.to be hit

  B.to have hit

  C.to have been hit

  D.to hit

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• 5The teacher doesn't permit ________ in class.

  A.smoke

  B.to smoke

  C.smoking

  D.to have a smoke

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• 6With a lot of things _________ ， John will have a difficult time.

  A.to deal with

  B.deal with

  C.dealing with

  D.dealt with

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• 7—What is the Group G8? —Oh, it is a group ________ the eight of the richest countries or areas of the world.

  A.consisting of

  B.consists of

  C.consisted of

  D.is consisted of

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• 8He is a football fan, so he is keen ________ football matches all day.

  A.to watching

  B.about watching

  C.to watch

  D.for watching

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• 9She was the only one __________ the wreck.

  A.surviving

  B.having survived

  C.to survive

  D.survived

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• 10Discovery in a South African cave suggests that modern human behavior _________ much earlier than _________.

  A.begin, previously thought

  B.began, previously thought

  C.should begin, previous thinking

  D.began, previous thinking

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