_____ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.

试卷相关题目

• 1It's only by travelling or living in a country and getting to know its inhabitants and their language _________ one can find out _________ a country and its people are like.

  A.what, what

  B.that, what

  C.that, how

  D.how, what

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• 2In the book, Newton is shown as a gifted scientist with very human weaknesses who stood at the point in history ______ magic ended and science began.

  A.what

  B.which

  C.that

  D.Where

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• 3When a student asks_________it is worth staying up doing their lessons, a teacher may find it difficult to answer.

  A.that

  B.what

  C.whether

  D.How

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• 4The time is not far away _____ modern communication will become widespread in China's vast countryside.

  A.as

  B.when

  C.until

  D.before

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• 5He often thinks of ______ he can do more for his country, so he is highly spoken of by the people throughout the country.

  A.what

  B.that

  C.how

  D.Whatever

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• 6It is during the Second World War ____he died.    

  A.when

  B.after

  C.before

  D.That

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• 7It's unfair! You sit there, listening to me, _____ I stand here, teaching you.

  A.as

  B.when

  C.while

  D.since

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• 8They decided to chase the cow away _____ it did more damage.

  A.unless

  B.until

  C.before

  D.although

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• 9Nearly a month had gone by ________ she showed some sign of giving in to her father.

  A.until

  B.before

  C.since

  D.after

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