问题
选择题
____is known to us all,,things can easily go wrong when people are under______.
A．Which;control
B．As; load
C．It; strength
D．As; stress
答案
答案：D
考查非限制性定语从句which和as的辨析。句意：众所周知，人们在有压力的情况下，做事容易出差错。依据句意后空stress合适，有逗号隔开it不能用；which不能放于句首。