Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
A．is changingB．has changedC．will have changedD．will change
A
題干中主句為Selecting a mobile phone …is no easy task,謂語動詞表示了一種“含此刻在內(nèi)的廣泛意義上的現(xiàn)在時間”，使用的是一般現(xiàn)在時態(tài)（…is no easy task）;后面的狀態(tài)從句（because…）中則說明原因為“技術(shù)更新變化迅速”，應(yīng)采用現(xiàn)在進行時：（technology）is changing(so rapidly).現(xiàn)在進行時態(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、發(fā)展和進展”
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