Traffic conditions in Beijing ________ for decades. At first people only complained about jams during rush hours，but today every hour is rush hour.
A．is worseningB．have worsened
C．worsenedD．have been worsening
D

試題分析：考查時(shí)態(tài)，由時(shí)間狀語(yǔ)for decades，可以知道時(shí)態(tài)是現(xiàn)在進(jìn)行時(shí)，因?yàn)槊~Traffic conditions和動(dòng)詞worsen是動(dòng)賓關(guān)系，所以用被動(dòng)式，所以選D
點(diǎn)評(píng)：時(shí)態(tài)是初中和高中階段的重點(diǎn)和難點(diǎn)，是高考�？純�(nèi)容，時(shí)態(tài)的考查主要看時(shí)間狀語(yǔ)，時(shí)間狀語(yǔ)for decades很容易知道時(shí)態(tài)，但是本題和被動(dòng)式在一塊考查，增加了本題的難度，需要考生做題時(shí)多注意
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