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【单选题】
关于肿瘤免疫的描述,错误的是( )A.
实验证实在某些肿瘤细胞表面存在肿瘤特异性抗原
B.
血清癌胚抗原升高见于多种肿瘤
C.
人乳头瘤病毒感染与人宫颈癌发生有关
D.
血清抗甲胎蛋白抗体水平升高可以辅助诊断原发性肝癌
E.
抗EB病毒抗体阳性可以辅助诊断鼻咽癌
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【单选题】—______，Tom, are these your books? —No, they aren’t .I think they are_______.
A.
Excuse me: Jack
B.
Sorry ;Jack’s
C.
Excuse me; Jack’s
D.
Sorry; Jack
【单选题】The official in the tax office ________ that the shopkeeper was innocent.
A.
contented
B.
consented
C.
contained
D.
agreed
【单选题】He has decided to come back to China after graduating from Harvard University because China, in his eyes, is ____ he belongs. [ ]
A.
what
B.
where
C.
which
D.
that
【判断题】下列单词beach large best team back week cherry have pepper market March weather bad map garden grass meat party 中含/---+/aaa/+---/发音的有back bad have map
A.
正确
B.
错误
【单选题】I was surprised when the shopkeeper told me that my father had visited the shop, paid for the framing and______ them wrapped.
A.
should
B.
would
C.
had
D.
could
【简答题】什么是急流?全球有哪几个高空急流?请叙述低空急流的概念和基本特点。
【单选题】Realizing the boy was too poor to pay for the book, the shopkeeper of the bookstore gave him the book _____. [ ]
A.
off free
B.
with free
C.
for freely
D.
for free
【单选题】The official in the tax office ________ that the shopkeeper was innocent.
A.
contented
B.
consented agree
C.
contained
D.
contended
【单选题】The shopkeeper said that thief was a boy with blown hair．
A.
the，a
B.
the，不填
C.
a，不填
D.
a，a
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