PREP 44 比较形式对等问题 求教！

希尔

以下是我的理解，pls correct me

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  (substances 与one比，one 代表risk,比较形式不对等，排除)
 
 as little risk as one chance in a million of causing  （同上，排除）
 
 as little risk as one chance in a million that it will cause  （同上，排除）
 a risk as little as one chance in a million for causing  （risk 与 one chance比）
 
 a risk as little as one chance in a million for it to cause  （risk与one chance比，没D简洁，选了D）

我的问题是：对ABC比较对象  之间我是不是比错了? as little risk as one in a million chances难道是risk与one in a million在比？？我觉得substance是主语..所以as...as  之后的应该和substance比。。。






From studies of the bony house of the brain,which is the cranium,located in the back of the skull ,come what scientists know about dinosaur brain.

A.from studies of the bony house of the brain,which is the cranium,located in the back of the skull,come what scientists know about dinosaur brains.

B.the knowledge that scientists know about dinosaur brains comes from studies of the bony house of the brain,located in the back of the skull,that is ,the cranium.

C.the knowledge of dinosaur brains that scientists have come from studies of the bony house of the brain,which is located in the back of the skull and is called the cranium.

D.what scientists know about dinosaur brains comes from studies of the cranium,the bony house of the brain located in the back of the skull.

E.located in the back of the skull is the cranium,the bony house of the brain,and it is from studies of this that scientists know what they know about dinosaur brains.


D,E排除不掉 另外请教D,E的出题点..

verylotus

同意，应该是可能性的比较