提取原生苷时，为抑制或破坏酶的活性，可采用
A. 在中药中加入碳酸钙
B. 在中药中加入酸水加热
C. 沸水提取
D. 甲醇提取
E. 新鲜药材迅速干燥
Which of the following is not the correct expression for "车厢"？
A. coach
B. carriage
C. compartment
D. berth
A:__________________________?B: Medium done, please.
A. Would you like some tea?
B. How would you like your beef steak cooked?
C. How do you do?
A: This is your ______________and ___________. Please pack all your belongings and follow me. I'll show where your compartment is.
A. receipt, ticket
B. receipt, passport
C. passport, visa
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