Official 13 Lec 2
Question 5 of 6
Listen again to part of the Lecture. Then answer the question. Why does the professor say this:

A.

To point out that some terms have different meanings in other fields

B.

To indicate that she is not going to explain the term

C.

To defend a point she made earlier about ecosystems

D.

To clarify a term used in biology

正确答案:D

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