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【单选题】
下列有关血管内皮细胞的描述,错误的是A.
可减少血流阻力
B.
胞质中有吞饮小泡
C.
特有的细胞器是W-P小体
D.
细胞基底面附着于结缔组织上
E.
可合成分泌活性物质
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】— ____________? — Since I was five years old.
A.
How often do you skate?
B.
When did you begin to play baseball?
C.
How long have you been studying French
【单选题】— Could you play the guitar when you were 8 years old? — _____. [ ]
A.
Yes, I could.
B.
No, I can't.
C.
Yes, I can.
D.
No, I won't.
【简答题】瑞霞即将走向工作岗位,她选了一件格子呢西装,但又担心会显得成熟和老气,其实西装隐藏许多小心机。
【单选题】- did you start to swim? -When I was 7 yeas old. [ ]
A.
What
B.
How soon
C.
How long
D.
When
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