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【单选题】
HIV主要感染下列哪种细胞A.
CD 4 + 淋巴细胞
B.
B淋巴细胞
C.
单核细胞
D.
神经胶质细胞
E.
直肠黏膜上皮细胞
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【单选题】As a matter of fact, we do meet now and then, but not ________. [ ]
A.
regularly
B.
actually
C.
gradually
D.
normally
【单选题】We do meet now and then, but not ________.
A.
freely
B.
commonly
C.
regularly
D.
presently
【简答题】阅读理解。 The centerpiece of curling (冰壶) is the curling stone, which has been called a 'geometrical piece of tooled geology (地 质).' Kays of Scotland has been curling stones since 1851, when ...
【简答题】B The centerpiece of curling(冰壶)is the curling stone, which has been called a “geometrical piece of tooled geology (地质). ” Kays of Scotland has been curling stones sin ce 1851, when Willi...
【单选题】Now it won't be long before we meet again, ______ ?
A.
will it
B.
do we
C.
won't we
D.
does it
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