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【单选题】
不表达I类MHC分子的细胞是A.
T细胞
B.
B细胞
C.
神经细胞
D.
红细胞
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举一反三
【单选题】Yesterday my doctor gave me some tablets. There were five in the box. He told me to take one every half hour. How long did they last?
A.
They lasted one and a half hours.
B.
They lasted 3 hours
C.
They lasted 2 hours.
D.
They lasted 4 hours.
【单选题】There were two boys in the lab, did the experiment successfully.
A.
the clever of whom
B.
the cleverer or whom
C.
the clever of them
D.
the more clever of them
【多选题】引起人类下列不同疾病的病原虫属于鞭毛虫纲的是( )
A.
疟疾(疟原虫)
B.
黑热病(利什曼原虫)
C.
昏睡病(锥虫)
D.
滴虫性阴道炎、滴虫性尿道膀胱炎(阴道滴虫)
【简答题】There were several o____(物品) on the floor of the room.
【简答题】Text 2 At the start of the year, The Independent on Sunday argued that there were three over-whelming reasons why Iraq should not be invaded: there was no proof that Saddam posed an imminent threat Ir...
【单选题】You said the books were on the shelf ,but there.
A.
there was no one
B.
there were none
C.
there were no ones
D.
was none
【单选题】关于连续X线光子能量的叙述,错误的是
A.
X线是一束混合能谱
B.
能量决定于电子的能量
C.
能量决定于核电荷
D.
能量决定于电子接近核的情况
E.
能量大X线波长长
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