问题
单项选择题
A cold medication that has expired ______.
A.looks different
B.is 10 percent effective
C.remains somewhat effective
D.shouldn't be taken whatsoever
答案
参考答案:C
A cold medication that has expired ______.
A.looks different
B.is 10 percent effective
C.remains somewhat effective
D.shouldn't be taken whatsoever
参考答案:C