题目

新鲜血液加入抗凝剂并静置一段时间后，血液的变化是 A．包括血小板在内的全部血细胞沉于底部 B．部分血细胞与纤维蛋白丝缠结成块 C．血浆成分没有发生大的改变 D．血浆变成血 答案：AC 情景反应。(从所给的选项中选择正确的选项完成对话) A. I'll take it.  B. But it's too small.  C. Yes, please.D. We have different colors.     E. Black or blue.A: Good evening. May I help you?B: __1__. I want to buy a sweater for my son.A: What color would you like?B: __2__.A: Have a look at the sweaters over there. __3__. Which one do you like?B: I think the blue one is nice. __4__.A: What about this one?B: This one is just fit me. How much is it?A: It's 35 yuan.B: That's a good price. __5__.