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【单选题】
通常下列哪种物质的免疫原性最强A.
多糖
B.
类脂
C.
核酸
D.
蛋白质
E.
糖脂
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举一反三
【单选题】American colleges are for______.
A.
the intelligent
B.
anyone who has a need
C.
the academically prepared
D.
the rich who can afford their education
【单选题】It has been made __________ public that anyone who does harm to the environment in __________ public places will be blamed by __________ public.
A.
the, the, the
B.
/;the; the
C.
/; /; the
D.
the; /; the
【简答题】若某种材料允许的切削速度为v 15 =150m/min，其含义是什么?
【单选题】Never before (I have) seen anyone (who has) the skill (John has) when he (repairs) cars.
A.
I have
B.
who has
C.
John has
D.
repairs
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