题目

从化学的角度看下列分析或做法，错误的是( ) A．洗涤剂清除油污利用了其乳化功能 B．天然气泄漏，立即关闭阀门并开窗通风 C．在金属表面刷漆的目的是隔绝氧气和水蒸气，防止金属锈蚀 D．炒菜时油锅着火，立即用水浇灭 答案：D根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 （注意：如果所用的答题卡没有提供E、F、G选项，请按以下方法填涂：选E请涂A、B，选F请涂B、C，选G请涂C、D。） — Good morning.      61     — Yes. I’d like some information about English courses in your college.      62     — Yes, there’s a beginners’ course on Monday evenings at 7:30. — On Monday?      63     — Yes, I’m afraid so. — Well.      64      But do you think you’ll have a course on some other night in the future ? — Well.     65      Perhaps we will offer one in the future. A. I work on Mondays, so I’m afraid that’s no good for me. B. Do you have any courses for complete beginners? C. Is that the only course you’ve got? D. Why not come earlier? E. Can I help you? F. I want to have English lessons. G. Wait for some time, please.