Beijingwasunderan“orange”smogalertonFeb.24,whichmarkst...
來源:國語幫 3.05W
問題詳情:
Beijing was under an “orange” smog alert on Feb. 24, which marks the first time the second-highest warning level of a new system introduced last year .
A. raised B. has been raised C. rose D. has risen
【回答】
B
知識點:動詞時態與語態
題型:選擇題