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177. Don’t use words,expressions,or phrases _____ only to people with specific knowledge.

A. being known        B. having been known C. to be known    D. known

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176. Though ______ money,his parents managed to send him to university.

A.  lacked   B. lacking of  C.  lacking      D.  lacked in

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175. Quite a few people used to believe that disaster _____ if a mirror was broken.

A. was sure of striking  B. was sure of having struck

C. was sure to be struck  D. was sure to strike

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174. In order to gain a bigger share in the international market,many state-run companies are striving _____ their products more competitive.

A. to make    B. making  C. to have made      D. having made

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173. - How do you deal with the disagreement between the company and the customers?

  - The key ______ the problem is to meet the demand ______ by the

     customers.

A. to solving;making     B. to solving;made

C. to solve;making        D. to solve;made

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172. The research is so designed that once _______ nothing can be done to change it.

A. begins  B. having begun   C. beginning  D. begun

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171. Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.

A. to see   B. to be seen     C. seeing     D. seen

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170. She will tell us why she feels so strongly that each of us has a role       in making the earth a better place to live.

A. to have played      B. to play  C. to be played   D. to be playing

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169. Unless       to speak,you should remain silent at the conference.

A. invited  B. inviting C. being invited D. having invited

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168. __  the meeting himself gave them a great deal of encouragement.

 A. The president will attend        B. The president to attend

 C. The president attended          D. The president’s attending

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