Official 42 Lec 3
Question 6 of 6
Why does the professor say this:

A.

She does not have time to fully explain the reason

B.

She is hopeful that students will be able to figure out the reason

C.

She wonders why mushrooms are not already used for cleaning up pollution

D.

She realizes that the research she has been discussing is still in its early stages

正确答案:C

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