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【单选题】
关于肿瘤逃避免疫监视的机制,下列哪错误的A.
瘤细胞 抗原缺失或调变
B.
瘤细胞 MHC I 类分子表达低下或缺失
C.
瘤细胞 PD-1 分子表达减低
D.
瘤细胞 分泌抑制性细胞因子
E.
瘤细胞 表达 FasL 增高
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【单选题】If a man is legally separated from his wife, is he still ( ) for her debts?
A.
answerable
B.
chargeable
C.
recoverable
D.
payable
【单选题】—Oh, Dad, I really feel _______ before the exam. —Take it easy. Sure you are the best.
A.
quiet
B.
confident
C.
nervous
D.
bored
【简答题】为什么个人信用报告中不区分“善意”欠 款与“恶意”欠款？
【单选题】— Mum, I really think Dad should have a break and get relaxed. — Yes. He _______ too long.
A.
read
B.
has been reading
C.
had read
D.
is reading
【单选题】— Mum, I really think Dad should have a break and get relaxed. —Yes. He_________ too long.
A.
read
B.
had read
C.
has been reading
D.
is reading
【简答题】“It's really cool to have a dad who flies fighter jets,”thought 11-year-old Casey as she was watching him fly overhead. Living on an Air Force base was not as bad as some people might think. Casey rat...
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