我们常用来检验是否淀粉存在的溶液是
A．食盐溶液
B．酒精溶液
C．碘酒溶液
D．水
C
- Sam, I called you yesterday evening, but no one answered.
- Oh, sorry. I _______ a shower at that time. [ ]
A. took
B. am taking
C. take
D. was taking
激励
