When exposed to stress, in form, all of us react both chemically and physically.
A. whichever
B. whatever
C. however
D. whenever
网友回答
A. whichever
(答案→)B. whatever
C. however
D. whenever
解析：这题考查让步状语从句的用法，whatever=no matter what“无论怎样”，修饰form，句意是：当面临危险，无论是以什么形式，我们的反应既有化学的也有物理的。选B。