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【单选题】
B细胞能识别特异性抗原，因其表面有A.
Igα/lgβ
B.
MHC-II类分子
C.
CDl9/CD21/CD81
D.
mlg
E.
TCR
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举一反三
【简答题】在《与友人论学书》中,顾炎武的核心主张是 和 。
【单选题】If you like to take dangerous shortcuts, break the habit.
A.
如果你总是走危险的捷径，改掉这个习惯 。
B.
如果你总是走危险的捷径，打破这个习惯 。
C.
如果你愿意走危险的捷径，改掉这个习惯 。
【简答题】If you are going to work part-time, what job would you like to take? Why?
【简答题】尖轨跟端的传力机构主要有()和限位器。
【单选题】听力原文：M: If you'd like to take the package with you, Miss, it won't take long to wrap. W: There's no rush. Could you please have it delivered this week? Q: What does the woman mean? (17)
A.
She'd like the store to send the package to her.
B.
The package will arrive next week.
C.
The package must be wrapped quickly.
D.
She'll take the package with her to save trouble.
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