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答题结果:0/6
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Question 1 of 6
What is the lecture mainly about?

A.

The process by which immune cells are produced

B.

The effects of consuming far fewer calories than usual

C.

The function of an organ found in rhesus monkeys and in humans

D.

The discovery of a nutrient necessary for good health

我的答案:

正确答案:B

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