题目

下列对实验现象的描述错误的是（） A . 镁条在空气中燃烧，发出耀眼白光 B . 铁丝在氧气中燃烧，火星四射，生成黑色固体 C . 蜡烛在空气中燃烧，生成二氧化碳和水 D . 氢气在空气中燃烧，产生淡蓝色火焰 答案：CP: Hi, Mark. I want to have a class party. __小题1:_M: Sure, Andy. I can help you. So when shall we have the party?P: __小题2:__M: No, it is too early today. If we have it today, half the class won’t come.P: OK, let’s have it tomorrow.M: Hmm…__小题3:__ Students will leave early to study for the test. Let’s have it on the weekend.P: OK, let’s have it on Saturday afternoon. We can all meet and watch a video.M: No, __小题4:___ Some students will be bored. Let’s play party games.P: OK, good idea. Can you organize the party games?M: Sure, I can do that. __小题5:__You will have a good time.And can you make some food for us?Will you help me organize it?There’s a test tomorrow.I am going to take a bus to the party.Let’s have it today after class.I don’t think we should watch a video.