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【简答题】
现代免疫学的概念认为，免疫的功能有：（）、自身稳定、（）。
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反馈参考答案：
举一反三
【单选题】---Have you ever traveled abroad? ---Sure. I in a small town in the USA with my grandparents.
A.
used to live
B.
was used to living
C.
was used to live
D.
didn’t use to live
【单选题】听力原文：M: Have you ever used any of the services offered by the Career Services Center? W: (9) I've never logged on to any of the e-fairs, but I have used the career mentoring program. It's great! I've ...
A.
She never used the services offered by the Career Services Center.
B.
She logged on the e-fairs of the Career Services Center.
C.
She didn't like the services offered by the Career Services Center.
D.
She has used the career mentoring program.
【简答题】地毯具有______、______、______和______作用。
【简答题】竹茹具有______________________________和_______________功效。
【简答题】血氧分压(partial pressure of oxygen)
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