_____all the inventions(发明) have in common is ______ they have succeeded.

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• 1I have been working there for 15 years, and never before __________ my boss so serious!

  A.I found

  B.I have found

  C.did I find

  D.have I found

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• 2I think I’ve reached the point ______ I enjoy seeing the scenery (景色)of the whole city.

  A.when

  B.where

  C.which

  D.that

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• 3With the boy______ the way, we had no difficulty ______the village.

  A.to lead; to find

  B.leading; to find

  C.leading; finding

  D.to lead; finding

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• 4All we know that _____ you exercise regularly, you won’t keep good health.

  A.if

  B.unless

  C.since

  D.whenever

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• 5A driver should_______ the road when______.

  A.concentrate on; drive

  B.concentrate in; driving

  C.concentrate to; drove

  D.concentrate on; driving

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• 6The president spoke at the business meeting for nearly an hour without ______ his notes.

  A.bringing up

  B.referring to

  C.looking for

  D.trying on

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• 7--- Have you got any idea for the summer vacation、---I don’t mind where we go _______ there’s sun, sea and beach.

  A.as if

  B.as long as

  C.now that

  D.in order that

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• 8Only when _______ the tea-house ________ it was the same place he had been in last year.

  A.he reached ; did he realize

  B.did he reach ; did he realize

  C.he reached ; realized he

  D.he reached ; had he realized

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• 9According to the passage，                    ．

  A.we can hardly understand what people’s gestures mean

  B.we can not often be sure what people mean when they describe their feelings

  C.words can be better understood by older people

  D.gestures can be understood by most of the people While words can not

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• 10In the same culture，              ．

  A.people have different ability to understand and express feelings

  B.people have the same understanding of something

  C.people never fail to understand each other

  D.people are equally intelligent

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