具有泄热通便、润燥软坚、清火消肿之功效作用的药物是()
A.黄柏
B.阿胶
C.当归
D.山药
E.芒硝
参考答案:E
The professor said he could talk on _____ interested the audience.
A.any topic
B.which topic
C.whichever topic
D.the topic he thought it
关于锂、钠、钾、铷、铯的性质递变规律,不正确的叙述是
A.单质的密度依次增大
B.单质的熔沸点依次降低
C.单质的还原性依次增强
D.离子的氧化性依次减弱