题目

下列研究领域不涉及化学学科的是（ ） A．合成新物质   B．寻找新能源 C．治理环境污染 D．物体的运动形式 答案：【考点】化学的研究领域． 【分析】根据化学研究的领域和化学的用途来回答本题． 【解答】解：化学是研究物质的组成、结构、性质、以及变化规律的基础自然科学，也就是说化学是研究物质的一门科学，合成新物质、寻找新能源都是在研究新的物质属于化学研究的领域；治理环境污染需要利用新根据对话情景和内容,从对话后所给的选项中选出能填入每一空白处的最佳选项,选项中有两个为多余选项。 — How can I help you? —    1.    — Would you like to send it surface or airmail? —   2.   — If you send the parcel with surface email, it will take about 2 months to arrive, whereas with airmail, it will arrive in one week or more. — That’s a big difference. 3.　 How much will it cost to send it airmail? — That depends on the weight. Place it on the scale, please. — OK. — That’s 300 grams.     4.    — That’s not bad. I’ll do that then. Does that include insurance on the contents of the parcel or is that a separate payment? —     5.  It’s another 5 pounds. — OK. A．I suppose airmail will be much more expensive. B．I want to buy some stamps. C．I’d like to send this package to China. D．That’s separate. E. That’s all right. F. What’s the difference between surface and airmail? G. It will cost 10 pounds for airmail.