常用的微生态制剂有哪些（）。
A.乳酸菌素片
B.双歧杆菌活菌制剂
C.地衣芽抱杆菌活菌颗粒剂
D.双歧三联活菌胶囊
参考答案：A, B, C, D
— What is your plan for the holiday, Paul?
— I'll go on a trip to Yunnan Province with my family.
— _____.[ ]
A. Have a nice time
B. Good luck
C. Come back soon
D. Congratulations
矿物的压电性质只发生在（），具有（）的各类矿物中。
