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Question 2 of 6
What is one of the reasons that the professor mentions pollution that comes from a pipe?

A.

To compare point source pollution with nonpoint source pollution

B.

To blame factories and sewage treatment plants for producing most water pollution

C.

To demonstrate that agricultural runoff is a point source pollutant

D.

To suggest new methods that may someday begin to reduce water pollution

我的答案:

正确答案:A

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