2道gmatprep错题，请教

The computer company has announced that it will purchase the color-printing company for $950 million, which is part of a deal that ill make it the largest manufacture in the office color-printing market.

1. million, which is part of a deal that will make


2. million, a part of a deal that makes


3. million, part of a deal making


4. million as a part of a deal to make


5. million as part of a deal that will make

这里的will和前面的"it will purchase"对应时态.而且句义明确,E是说整个deal去做什么(这也是原句的意思),而D改变了这个意思.

另外我还有几道Gmatprep上的问题,请教大家:

3. The environment protection agency frequently puts mandatory controls on toxic substances that present as little risk as one in a million chances to cause cancer

1. as little risk as one in a million chances to cause


2. as little risk as one chance in a million of causing


3. as little risk as one chance in a million that it will cause


4. a risk as little as one chance in a million for causing


5. a risk as little as one chance in a million for it to cause (B)

我选了D,as...as结构牛牛能不能针对这道再点拨一下啊.

4.

Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture to 1950.

1. Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture


2. Sine 1990 the growth of the global economy has been more than that during 10,000 years, from when agriculture began


3. The growth of the global economy since 1990 exceeds that which had been for 10,000 years from the beginning of agriculture


4. The growth of the global economy since 1990 exceeds what it has been for 10,000 years, from when agriculture began


5. The growth of the global economy since 1990 exceeds what it did for the 10,000 years from the beginning of agriculture

这题选A没问题,不过想问一下, from when是不是错的用法,有没可能正确?