Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
A．will changeB．has changed
C．will have changedD．is changing
D

試題分析：此處技術(shù)的變化指在一段時(shí)間內(nèi)一直進(jìn)行的變化，故用現(xiàn)在進(jìn)行時(shí)。句意：選一部個(gè)人用手機(jī)不是一件容易的事情，因?yàn)榧夹g(shù)變化很快。
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