九味羌活汤与川芎茶调散中均含有的药物是
A．荆芥B．防风C．白前D．百部E．陈皮
参考答案：B
句型转换。
1. The store was crowded. (对划线部分提问)
_____ _____ the store?
2. They stopped working at 7: 00 yesterday. (改为否定句)
They _____ _____ working at 7: 00 yesterday.
3. We went to Beijing on vacation. (对划线部分提问)
_____ _____ you _____ on vacation?
在机械搅拌式浮选机内，提高搅拌强度，（）。
A.可以改善气泡分布的均匀性和弥散程度；
B.不会改善气泡分布的均匀性和弥散程度；
C.对气泡分布的均匀性影响不大；
D.会增加分选难度。
