A:f(5)<f(2)<f(-1)
B:f(5)<f(-1)<f(2)
C:f(-1)<f(2)<f(5)
D:f(2)<f(-1)<f(5)
It's rather windy today. Put on some warm clothes, _________ you'll catch a cold.
孕妇在怀孕期间应当尽可能避免感冒,否则感冒药的副作用会对胎儿构成危害,是因为( )
A. B. C.
D. E. F..