题目内容

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

试题分析：考查时态，由时间状语for decades，可以知道时态是现在进行时，因为名词Traffic conditions和动词worsen是动宾关系，所以用被动式，所以选D
点评：时态是初中和高中阶段的重点和难点，是高考常考内容，时态的考查主要看时间状语，时间状语for decades很容易知道时态，但是本题和被动式在一块考查，增加了本题的难度，需要考生做题时多注意
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