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
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单项选择题
Which section of the book may contain biblical examples
A．Ⅱ.3.
B．Ⅳ.8.
C．Ⅴ.3.
D．Ⅴ.6.
单项选择题
After expiration date, contact lens solution______.
A．will remain stable
B．will become poisonous
C．will not be effective
D．will cause eye irritation
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