问题
选择题
属于毛细血管的特点的是[ ]
A．血管的起始部位与最小的静脉相连
B．管内血流速度最快
C．管内只流动着含氧的血
D．管壁由一层扁平上皮细胞构成
答案
答案：D
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属于毛细血管的特点的是[ ]
A．血管的起始部位与最小的静脉相连
B．管内血流速度最快
C．管内只流动着含氧的血
D．管壁由一层扁平上皮细胞构成
答案：D
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| Helen is my sister. She likes hamburgers very much. 1 breakfast she has hamburgers and some milk. But I don't have hamburgers. After (在……后) 2 she and I go to school. We have 3 at school. She has apples and vegetables. 4 I don't like them. I only eat eggs and salad. We have dinner at home with (和) our parents. For dinner we have chicken, vegetables and rice (米饭). My father likes to have tea (茶) after dinner. But I don't like tea. I like ice cream for the 5 . What do you have for your breakfast, lunch and dinner? | |||
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