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Selecting a mobile phone for personal use is no easy task because technology ________ so rapidly.


  1. A.
    is changing
  2. B.
    has changed
  3. C.
    will have changed
  4. D.
    will change
A
解析:
題干中主句為Selecting a mobile phone …is no easy task,謂語動(dòng)詞表示了一種“含此刻在內(nèi)的廣泛意義上的現(xiàn)在時(shí)間”,使用的是一般現(xiàn)在時(shí)態(tài)(…is no easy task);后面的狀態(tài)從句(because…)中則說明原因?yàn)椤凹夹g(shù)更新變化迅速”,應(yīng)采用現(xiàn)在進(jìn)行時(shí):(technology)is changing(so rapidly).現(xiàn)在進(jìn)行時(shí)態(tài)在此表示了一種“持續(xù)變化”的狀態(tài),體現(xiàn)了“變化、趨勢(shì)、發(fā)展和進(jìn)展”(Collins COBULLD ENGLISH GRAMMAR),類似用法又如:His handwriting is improving.World energy demand is increasing at a rate of about3% per year.
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Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.

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B
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