prep1 23请教

nut728

The Environmental Protection Agency frequently puts mandatory controls on toxic substances that present as little risk as one in a million chances to cause cancer.



(A) as little risk as one in a million chances to cause

(B) as little risk as one chance in a million of causing

(C) as little risk as one chance in a million that it will cause

(D) a risk as little as one chance in a million for causing

(E) a risk as little as one chance in a million for it to cause

答案B
求高人分析句子结构和选项

kazemi

risk of

nut728

对哦，醍醐灌顶呀，谢啦谢啦

shkyxy

可以再具体点吗？