马兜铃酸毒性成分是()
A.雷公藤
B.关木通、马兜铃、广防己
C.白果、苦杏仁、桃仁
D.川乌、草乌、附子、雪上一枝蒿
E.甘遂、大戟、芫花、巴豆
参考答案:B
— A number of people _______ killed by the terrorists at the Urumqi train station.
— _______ terrible it is!
A.were; How
B.was; How
C.were; What
D.was; What
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