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29. Welcome to the Science Museum, everyone! This stone axe _______ in South Africa and 

experts can’t be exactly sure about its use.

  A. had been found  B. was found   C. has been found  D. would be found

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28. Some biologists believe this is an ancient survival strategy, _______ a diet with 30 percent 

fewer calories than usual increased life span.

  A. for which    B. to which    C. of which    D. in which

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27. The county, ________ in the north of Shanxi, has a history of more than 1,400 years.

A. located      B. to be located   C. being located  D. locating

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26.—Shall we attend the concert this evening?

    —Great idea, _______ we can do some shopping first.

A. when     B. where     C. since     D. if

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25.—Why do English people talk so often about the weather when they start a conversation?

 —Well, it’s probably because the weather is a(n)________ topic.

A. safe      B. sensitive    C. amazing    D. ordinary

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24. People in Los Angels have no idea of distance on the map, so they measure distance ________ 

time not miles.

A. by way of   B. by means of   C. for lack of   D. on account of

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23.—What kind of food do you prefer?

 —______ but Japanese.

  —How about Korean, then?

A. Something    B. Nothing    C. Anything   D. Everything

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22.—What attracted you to our university?

   —You have a great basketball team and I can _______ for it.

A. work out     B. look out    C. carry out   D. try out

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