问题
选择题
In old China, the poor suffered from cold and hunger ________ the rich enjoyed all the good things of life.
A．as
B．when
C．while
D．therefore
答案
答案：C
题目分析：句意：在旧中国，穷人遭受着寒冷和饥饿，而富人享受这所有生活中的好东西。A由于B当C然而，对比说明D所以，故选C。