新東方新托福聽(tīng)力特訓(xùn)Air Pollution

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Why does the man say this?

A He is afraid that the area that they haven’t covered might make them change what they have
already written.
B He is afraid that the area that they haven’t covered might require them to change the project
deadline.
C He hopes that there will be a limited number of topics they can deal with.
D He hopes that the one area that they haven’t covered will be the main idea of the project so that
they don’t have to care what they have done before.
(A)