the exploration of the botanical world ________ on a large scale.

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• 1So convenient _______ to pay by credit card that more and more people apply for their credit cards.

  A.do people find

  B.people find it

  C.find people

  D.do people find it

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• 2Though _____ of the danger, he still went skating on the thin ice.

  A.warning

  B.to warn

  C.warn

  D.warned

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• 3If you don't go to that school, _________.

  A.neither shall I

  B.nor do I

  C.so do I

  D.neither do I

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• 4No sooner _____ on the TV than I heard the news that the stampede in Cambodia's capital, Phnom Penh, had left 375 victims dead．

  A.had I turned

  B.did I turn

  C.I had turned

  D.I turned

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• 5Only the factory ________ yesterday ________  this kind of machines.

  A.did we visit; does it produce

  B.did we visit; produces

  C.we visited; produces

  D.we visited; does it produce

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• 6---Shall I tell your best friends what happened to you yesterday? — ________ they ask you．

  A.Not if

  B.Not unless

  C.Not except

  D.Not though

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• 7  —Well. I do think the rabbit is a beautiful, gentle animal which can run very fast. — ________.

  A.So it is

  B.So is it

  C.So does it

  D.So it does

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• 8 ________ the key to the car when my boss came towards me.Finally I could drive him home as usual.

  A.Never had I found

  B.Seldom did I find

  C.Hardly had I found

  D.No sooner did I find

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• 9______ him to do like this, he wouldn't have made such a serious mistake in his writing.

  A.Did you persuade

  B.Had you persuaded

  C.If you should persuade

  D.If you persuade

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• 10Not even when _____through the darkest valley _____be afraid, for you are always close beside me.

  A.do I walk; will I

  B.do I walk; I will

  C.I walk ; I will

  D.I walk; will I

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