According to the passage, human death is now mainly caused by _______.

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• 1---Tony said he could fix my bicycle, but I really doubt it.---______. He's very good at this sort of thing.

  A.Don't worry

  B.I couldn't agree more

  C.Of course

  D.A piece of cake

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• 2You can't imagine what difficulty we had ______ home in the snowstorm.

  A.walked

  B.walk

  C.to walk

  D.walking

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• 3---Has your father returned from Africa yet、---Yes, but he _____ here for only three days before his company sent him to Australi

  A.A.was

  B.has been

  C.will be

  D.would be

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• 4We had to wait half an hour _____ we had already booked a table.

  A.since

  B.although

  C.until

  D.before

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• 5Don't be _____ by products promising to make you lose weight quickly.

  A.taken off

  B.taken out

  C.taken away

  D.taken in

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• 6In the author's opinon, today's most important advance in technology lies in _____.

  A.medicine

  B.the internet

  C.brain cells

  D.human organs

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• 7Humans may live longer in the future because ______.

  A.heart disease will be far away from us

  B.human brains can decide the final death

  C.the basic materials of cells will last forever

  D.human organs can be repaired by new medicine

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• 8We can learn from the passage that _____.

  A.human life will not last more than 120 years in the future

  B.human have to take medicine to build new skin cells now

  C.much needs to be done before humans can have a longer life

  D.we have already solved the technical problems in building new cells.

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• 9Danielle Steel is different from other writers in that ______

  A.she can write several books at the same time

  B.she often does some research before writing a book

  C.she is one of the most popular American women writers

  D.she can keep writing for quite a long time without a break

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• 10Children who have read "Max and Martha" picture books may know ______.

  A.how to deal with affairs at school

  B.what to do if Max and Martha die

  C.what to do when new babies are born into their families

  D.how to solve the difficult problems in their writing classes

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