Scientists have found evidence ________ global warming caused the world's first horses to become smaller nearly 50 million years ago.

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• 1 The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.

  A.that

  B.who

  C.where

  D.as

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• 2Chinese scientists have produced an embryo of a giant panda through cloning technology,_____ is a breakthrough ______ could save the endangered animals.

  A.that; which

  B.which; that

  C.which; what

  D.that; what

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• 3Modern science has given clear evidence ________ smoking can lead to many diseases. 

  A.what

  B.which

  C.that

  D.where

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• 4________ is known to us all, he is an excellent student in our class.

  A.Who

  B.That

  C.Which

  D.As

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• 5Golf is rapidly becoming more popular. Near some towns and cities new courses are being built in ________.

  A.what is farmland

  B.what farmland is

  C.what farmland was

  D.what was farmland

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• 6The Super Girl Wang Bei's death highlights the fact ________ cosmetic surgery has become one of China's biggest beauty secrets.

  A.that

  B.where

  C.what

  D.which

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• 7The project will help people understand the many threats to the natural environment ________ endangered plants and animals live.

  A.which

  B.when

  C.where

  D.that

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• 8---What did he want to know, Anne? ---He asked ____________we could finish painting the room.

  A.When was it

  B.when it was that

  C.It was when

  D.It was when that

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• 9This is the reason ________ he was late for class today.

  A.why

  B.for that

  C.which

  D.that

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• 10Owen wouldn't eat anything ________ he cooked it himself.

  A.until

  B.since

  C.unless

  D.while

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