A-A+
In the sentence Because humans are at the top
问题详情
In the sentence "Because humans are at the top of the food chain, they are particularly vulnerable to the effects of nondegradable pollutants.", "vulnerable" probably means ______.
A．defenseless
B．protected
C．strong
D．fragile请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：这个问句的意思是“因为人类在食物链的顶部，对于不能分解的污染物(食用)他们尤其脆弱。”根据 A项“无防御的”、B项“保护的”、C项“强壮的”、D项“易碎的”来看，A项比较合适。
