以下麻醉药物中含1个手性碳原子的药物是A．盐酸普鲁卡因 B．盐酸氯胺酮 C．丙泊酚

图为某城市两个工业区的分布示意图，东部工业区包括冶炼厂、钢铁厂、石化厂等，西部工业区包括焦化厂、水泥厂等。该地盛行南风。回答下列问题。  

（1）判断东部工业区的选址是否合理，并说明理由。

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（2）20世纪80年代以来，随着城区不断扩展，要求西部工业区中的焦化厂、水泥厂迁的呼声越来越大。为什么？

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根据上下文，用方框中所给句子完成对话，其中有两项是多余的。

A. Do you think that will help? B. That's true. C. You are wrong. D. What's the trouble, Mike? E. How long have you had the problem? F. Good idea! G. All right, doctor. I'll have a try. (Mike comes to see Dr. White. W: White; M: Mike) W: (1)__________ M: Well, doctor. It's my eyes. I can't see clearly. W: (2)__________ M: Since last week, I think. W: Let me have a look. Oh, I guess you are working too hard these days and taking less care of your eyes. M: __________.(3) What should I do then? W: Well, when you feel tired, just stop working and come out to enjoy a short rest. Remember: never go to       bed too late and don't read in bed. M: (4)__________. W: Sure, Mike. M: (5) __________ Thank you very much.

以知识为中心的传统教学模式禁锢了学生的创造力，是失败的教学模式。

球形胶芯环形防喷器胶芯呈（）。

A、圆台状

B、圆球状

C、半球状

D、锥形

简述作物营养生长与生殖生长的关系。