(2014·東北三省三校一聯(lián))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 worsening B.have worsened

C.have been worsening D.worsened

 

C

【解析】考查動詞的時(shí)態(tài)。由空后的for decades可推知,此處要用完成時(shí)態(tài),故可以排除A、D兩項(xiàng)。由下句內(nèi)容可知,北京這種交通狀況是從過去一直持續(xù)到現(xiàn)在,且會持續(xù)下去,故應(yīng)該用進(jìn)行時(shí)態(tài)。

答案: C

 

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