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.
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| as little risk as one in a million chances to cause |
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| as little risk as one chance in a million of causing |
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| as little risk as one chance in a million that it will cause |
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| a risk as little as one chance in a million for causing |
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| a risk as little as one chance in a million for it to cause
答案给的是B,没弄明白到底是什么跟什么比较呢?为什么不能是risk和one chance in a million的概率比较呢? |