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【单选题】
将PBMC悬液倾于玻璃培养瓶中,37°C静置l小时,未贴壁的细胞主要是A.
淋巴细胞
B.
单核细胞
C.
T细胞
D.
B细胞
E.
PBMC中混入的杂质细胞
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举一反三
【单选题】Why does the traveler want to take a bus?
A.
The bus tickets are cheaper than the train tickets.
B.
The bus trip is comfortable because it is air-conditioned.
C.
Bus stops at several cities along the way.
D.
The traveler wants to experience another way of traveling.
【简答题】Why does Miss Smith arrange the visit to MIT and Harvard in a single day?
【单选题】Why does Diana take a bus that day?
A.
She is environmentally-concerned.
B.
She wants to save money.
C.
Her car is being repaired in the shop.
D.
She wants to see the man on the bus.
【单选题】Why does Liz leave Harvard University?
A.
She had no money to study there
B.
She liked Columbia Universtiy more than Harvard University .
C.
She wanted to take care of her sick father.
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