问题
单项选择题
Whenever we hear of a natural disaster, we feel sympathetic to the people to be affected .
A．to have affected
B．to have effected
C．who have been effected
D．who have been affected
答案
参考答案：D
解析：时态应用。动词不定式短语常表示将来要发生的动作，与本题意思不符，因而排除A、B。题干中people后的affect表示“影响，侵袭”应该用被动式。effect做动词用时表示“招致，实现，达到(目的等)”，表示“影响”时是名词：The drug had an immediate effect on the pain．这药对止痛能立刻生效。