防治脑水肿，当前应用广泛且效果最好的脱水剂是（）。 A.20%甘

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问题单项选择题

防治脑水肿，当前应用广泛且效果最好的脱水剂是（）。

A.20%甘露醇溶液

B.30%尿素溶液

C.25%山梨醇溶液

D.浓缩血清溶液

E.50%葡萄糖溶液

答案

参考答案：A

改错题

短文改错。

My sister saw a lovely cup when we are shopping the other day. She liked it at once. Then she

bent down and picked up to look at a price on it. As she did this, lots of tea splashed on his T-shirt!

I had to try hardly not to laugh at her shocked face! My sister wanted get out of the shop as fast as

she could when a shop assistant came over to us. It was turned out to be her own cup, that she’d

left on the shelf by mistake. The assistant was clearly as embarrassing as my sister, for I just thought

it was funny!

单项选择题

形成高带免疫耐受的细胞是

A．B细胞

B．T细胞

C．T和B细胞

D．单核细胞

E．NK细胞