参苓白术散组成中有()
A.人参、麦芽
B.白术、神曲
C.茯苓、半夏
D.人参、黄芪
E.山药、扁豆
参考答案:E
推理是学习化学的一种重要方法,但不合理的推理会得出错误的结论。以下推理正确的是
A.含碳元素的物质充分燃烧会生成CO2,燃烧能生成CO2的物质一定含碳元素
B.离子是带电荷的微粒,带电荷的微粒一定是离子
C.碱溶液的pH都大于7,pH大于7的溶液一定是碱溶液
D.分子可以构成物质,物质一定是由分子构成的
Many students write to me and ask me _________ their problems and I give them my advice and tell them _________.[ ]
A. how to solve, what to do
B. how can solve, how to do
C. how to solve, how to do
D. how will solve, what to do