* * 分泌物悬液滴虫检查，应加入少量（）
A.注射用水
B.氢氧化钠
C.碳酸氢钠
D.生理盐水
E.特定试剂
参考答案：D
---yes, _______.We’d better buy some.
A. run out of; we have run it out
B. run out of; our food has run out
C. run out of; out food has been run out
D. run out; our food has run out
怎样才能做到三轮体空、如如不动？
