题型:单词拼写(语篇) 题类: 难易度:普通
浙江省余姚市联考2024-2025学年九年级上学期英语12月月考卷
Sleep experts often say that for a better night's rest, people should turn off their smart phones or iPads before sleeping. Such electronic (产品) make the brain more active, and then influence their sleep. But according to a latest survey, (几乎)15% of people often use computers or smart phones in the hour before bed.
In the (项目), the researchers (分开) the volunteers into three groups and asked then to read, play games and watch movies on a screen for different time while measuring how much light their eyes (收到). They found that two hours of sitting before a bright screen at night made the sleep chemical levels drop by about 22%. Then the researchers studied the college students who spent a long (一段时间) of time on computers at night. They got the similar result without (疑问). And researchers said that might not only cause sleep- lessness, but also (增长) the risk of obesity(肥胖症), diabetes(糖尿病) and other diseases.
To be on the safe side, the researchers suggest that we should use computers (明智地). In the (日常的) life, we'd better turn down our screens as much as possible before sleeping.
DO IT YOURSELF SCIENCESCIENCE IIUSTRATHD Build a mini solar desalination plant. It's a beautiful day, so, let's get outside and do some science. Here's an amazing experiment (实验) that uses solar energy. You will need: ◎A large bowl ◎A tall glass ◎Some salt ◎A stone ◎Some plastic wrap (包装膜) Steps: ◎Put the water into the large bowl. Put the salt in the water. ◎Put the glass in the middle of the bowl. The top of the glass must be above the water. ◎Put the plastic wrap over the bowl and the glass. Put a stone on top of the plastic wrap. ◎Put the bowl outside in the sun. What will happen? The water will get hot and then become gas. The salt will stay in the bowl, and the gas will rise and hit the plastic wrap. Then it will become water again and fall into the glass. If you take the plastic wrap off the bowl, you'll see water in the glass. If you taste the water, you'll find that there isn't any salt in it. |
The Most Useful Invention | |
Invention | Mobile Phone |
Inventor | American, Martin Cooper |
Time | 1973 |
Usage(用途) | 1. 与他人交流方便 2. 代替相机照相 …… |
Your opinions about how to use them well | 1. 允许青少年使用手机 2. 以正确的方式使用它们 …… |
要点如下:短文必须包含以上内容,可以适当发挥,语意连贯,词数80-100(开头已给出,不计入总词数)
注意: 不要逐句翻译.
The Most Useful Invention
Mobile phones are one of the most useful inventions.
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