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【单选题】
关于TD抗原正确的是A.
在胸腺中产生
B.
只有在T细胞辅助下才能产生针对这种抗原的抗体
C.
仅存在于T细胞上
D.
相应抗原在胸腺中产生
E.
对此抗原不产生体液免疫
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反馈参考答案：
举一反三
【单选题】We all must work _____ and study_____.
A.
hard; hardly
B.
hardly; hardly
C.
hard; hard
D.
hardly; hard
【单选题】听力原文：M: Did you go to the big sale at Spencer's yesterday? W: I had to visit my aunt in the hospital. Q: What does the man mean? (19)
A.
He thinks she bought something for her aunt.
B.
He thinks she might have been there.
C.
He thinks she was there only briefly.
D.
He thinks she went to it on her way to the hospital.
【单选题】---I had a really good weekend at my aunt’s. -______.
A.
Oh, that’s very nice of you
B.
Congratulations
C.
It’s a pleasure
D.
Oh, I’m glad to hear that
【单选题】—I had a really good weekend at my aunt's. —
A.
Oh,that，s very nice of you
B.
Congratulations
C.
Oh,I’m glad to hear that
【单选题】听力原文：Despite Tom's affirmations of innocence, Aunt Polly still suspected he had eaten the pie. (26)
A.
Aunt Polly thought that Tom was the one who ate the pie.
B.
Aunt Polly believed that Tom didn't eat the pie.
C.
Aunt Polly ate the pie herself and Tom was innocent.
D.
Aunt Polly suspected that Tom's pie was eaten by someone.
【单选题】Eli’s aunt had a positive______________ on him. She helped him to become a better student.
A.
respect
B.
influence
C.
valuable
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