1 . Indeed, by ________ estimates, there may be as many as 40 million stray dogs in China, carrying disease or becoming aggressive and attacking ________.
| A．tough, passers-by | B．rough, passers-by |
| C．tough, passer-bys | D．rough, passer-bys |
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2 . ________ confidence in yourself is the biggest difficulty ________ greater progress in your work.
| A．Lacking of; in making | B．Lack of; to make |
| C．Lack of; in making | D．The lack of; to make |
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3 . We hope the trend continues, until such aural excursions become a regular happening rather than a rare________.
| A．career | B．relief | C．treat | D．hustle |
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4 . Jay Leno, the host of the “Tonight” show, once said that every new challenge put all the resources of the host to the test, and most solutions belonged to the ________.
| A．accident | B．custom | C．event | D．occasion |
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5 . There is no _____ that the earlier we are prepared, the better chances we will have.
| A．denying | B．to deny | C．being denied | D．to be denied |
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6 . Standing at the top of the rock, one can see the _____ of the whole island and enjoy the sky and the sea meeting on the horizon.
| A．contentment | B．representative | C．delicateness | D．landscape |
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7 . The scientist and volunteers are working together to save a species of birds from _____ by replicating its natural habit.
| A．contact | B．infection | C．alternative | D．extinction |
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8 . China is a racially mixed country, in which various ethnic(民族) groups bring their own unique flavors to each corner of the country, which adds ________ people's table.
| A．to great variety of | B．great variety to |
| C．to a great variety of | D．the great variety to |
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