Some plants are so sensitive ________ pollution that they can only survive in a perfectly clean environment.
A、from
B、against
C、to
D、with
【正确答案】：C
【题目解析】：sensitive to表示“对……敏感”；比如说be sensitive to ridicule对别人的嘲笑敏感，容易生气它后面也可以接about；be sensitive about one's appearance（对别人的外表敏感）过分注重外表
