扫描二维码，直接登录
题库 / Prep2007E2-SC-9
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.
as little risk as one in a million chances to cause
as little risk as one chance in a million of causing
as little risk as one chance in a million that it will cause
a risk as little as one chance in a million for causing
a risk as little as one chance in a million for it to cause
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
risk of doing
1. risk of doing sth., risk doing sth. 是固定搭配，由此排除A/D；
2. one chance in a million 是固定搭配，表示几率很小。由于修饰risk时，as little risk as one chance in a million 和 a risk as little as one chance in a million都是正确的表达方式。由此排除A；
3. C：that后面it引导的是定语从句，修饰的对象是risk。而从逻辑意义上看risk不应该cause cancer。排除C；
4. E：a million for it to cause 表达错误。排除E。
1-首先 as...as 结构，可以排除DE；
2-C that 后面有完整句子结构，到底是个定从还是怎么回事，定从it要省去，这个结构就有问题，还要看it 指代有歧义，排除C
3-AB里面就看定语用to do 还是doing, 这里to do和doing做定语成分，修饰Chance。 判断方法是看变化成分的主句的发生对变化成分的影响强弱与否，主句是“表现出风险-那种百万分之一导致癌症的可能性” 较弱，应该用ing，选B
risk of doing something； as little risk as one chance in a million; a risk a little as one chance in a million都正确。
as... as... 是一个什么样的比较结构？little risk 和 one chance in a million 比较？
结尾为什么要用 of causing 呢？
as...as...除了表示比较之外，还可以在身后接一个数值，表示chance的多少。
我是这样想的，这是 risk 和 chance 之间的比较，两个都是名词。
登录 或 注册 后可以参加讨论
risk of doing sth