《2025年千里马单元测试卷八年级英语下册人教版》

(D)
Computers can injure(伤害)you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, the injury happens very quickly. 46. ________ You may know how to ride a bike safely. Now learn to use a computer safely.
Your Eyes
Too much light can injure your eyes. Your eyes should be more than 50 centimeters(厘米)away from the screen. 47. ________ This gives your eyes a rest.
Your Hands and Wrists(手腕)
Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundreds of times. If you use a keyboard(键盘)for a long time, follow these three rules.
·48. ________
·Keep your elbows(肘)as high as the keyboard.
·Stop sometimes and exercise your hands, wrists and fingers in a different way.
Your Back
49. ________ The top of the screen should be in front of your eyes. Your forearms, wrists, hands and the upper part of your legs should all be parallel(平行的)to the floor. If you are sitting for a long time, get up and exercise your arms, legs and neck.
50. ________
根据语篇内容,从方框内所给的选项中选择能填入空白处的最佳选项,使短文意思通顺。选项中有一项为多余项。

答案： (D)46-50 CFADB

(E)
Healthy eating habits along with regular exercise is the only way to become fit. If we have the correct number of calories(卡路里)and exercise regularly, we will lose weight, keep it and feel great, too. During teenage years, it is important to give our body the energy(能量)it needs. If we don't eat meals, we won't get enough calories, and then we will feel tired. By the way, calorie is just another word for energy. About 50% of our calories should come from rice, bread, vegetables and fruit. We also need to drink a lot of water, 6 to 8 glasses a day. Drinking enough water will make our skin better and keep us healthy.
Exercise is something that can help to make us look good, feel good and be healthy. Experts(专家)suggest that teenagers should spend at least 30 minutes exercising a day, five times a week. That's easy to do! They can walk or ride bikes to school, and do sports at school. However, some teenagers often give up sports, saying they have no time left after their studies. In fact, doing exercise can help them sleep better at night and increase their ability to focus on their study.
If we follow the suggestions above, we will look and feel much better and become fit.
根据语篇内容,回答问题。(每小题答案不超过10个词)
51. How will we feel if we don't have meals?
______________________________
52. How many glasses of water do we need a day?
______________________________
53. What can make our skin better and keep healthy?
______________________________
54. How often do the experts suggest that teenagers should exercise?
______________________________
55. Can exercise help them sleep better at night and focus on their study?
______________________________

答案： (E)51.We will feel tired. 52.6 to 8 glasses. 53.Drinking enough water. 54.At least 30 minutes a day, five times a week. 55.Yes.