生活中处处充满化学．请选用厨房中的下列物质填空（填序号）： ①保鲜膜②铁锅③砂糖
题型：填空题
问题：
生活中处处充满化学．请选用厨房中的下列物质填空（填序号）：
①保鲜膜 ②铁锅 ③砂糖 ④食盐 ⑤蔬菜 ⑥小麦粉 ⑦食醋 ⑧白酒 ⑨植物油
富含油脂的是 ______，属于无机盐的是 ______，
由金属材料制成的是 ______，属于合成有机高分子材料的是 ______，
可除去热水瓶胆壁上水垢的是 ______，易溶于水的有 ______．
题型：填空题
Compared to the other parts of the body, our ears don’t ask for much. They don't need to be brushed once a day like your teeth. But they need some special care, especially if you like listening to music with earphones.
Maybe your mum or dad has told you, "Turn that down before you go deaf!" Well, they are quite right. Loud noise might cause hearing loss for a short time or even forever. Think that earphones are a good way to escape from your parents’ eyes? Well. It may not be as good a way as you expect. American doctors have studied a group of 44,000 people who used earphones more than 15 hours per week. The doctors found that 37,000 of them were getting hearing problems.
If you use earphones for too long a time, your ears might feel painful. You could also lose your hearing for the rest of your life.
So don’t wear your earphones too long. Use them less than one hour a day.
Want sharp hearing? Don’t forget to do the following:
Try to stay away from places where there is too much noise, like a disco. If you have to go, wear earplugs.
When swimming, remember to put earplugs into your ears to stop water from getting in.
Never put anything sharp into your ears. If you think you have too much earwax, ask your mum or dad to help you clean it out.
Keep these things in mind! Then you won't be saying "WHAT???" when you are older.
小题1:Which is the topic paragraph of the article?
A．Paragraph One.
B．Paragraph Two
C．Paragraph Five.
D．The last Paragraph小题2:Using earphones "may not be as good a way as you expect" because _______.
A．your parents know what you're doing
B．it can cause hearing problems
C．it makes your parents angry
D．most of you use them improperly小题3:If you want sharp hearing, you should _____.
A．have your ears specially trained
B．often we
ar earplugs and clean out the earwax
C．take good care of your ears
D．choose what you listen to carefully小题4:"WHAT???" in the last sentence is an expression showing that the speaker____.
A．has become impatient
B．speaks in a loud voice
C．is slow in understanding
D．asks for a lot of repetition