44. 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—one指代risk
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--it重复
D. a risk as little as one chance in a million for causing—chance of doing or to do
E. a risk as little as one chance in a million for it to cause—for it 罗嗦
D为什么错?我查了一下,for causing对,a risk as little as 也很常见
”so those on 25 cigarettes a day or more have a risk as little as one-tenth that of non-smokers,"
同请教这道题
不是很清楚其语法点
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