Unit 3 Safety Lesson 18 Never Catch a Dinosaur 课后检测 （含解析）冀教版英语九年级全一册

Unit 3 Safety Lesson 18 Never Catch a Dinosaur 课后检测 一、单项选择 1.With the development of 5G technology, our daily lives have become_____. A. more and more convenient B.the most convenient C.convenienter and convenienter D.convenient and more convenient 2.—How did you come to Baoding —By high-speed rail. It _____ only 28 minutes to get here. A. spent B. paid C.cost D.took 3.—Miss Li, can you tell me how to improve my writing skills —Certainly. I advise you _____ a diary in English every day. A.to keep B.keeping C.kept D.keep 4.My father often watches me _____ basketball in his free time. A. play B.played C. to play D.playing 5.We should _____ the teacher Zhang Guimei. Her spirit of never giving up often encourages me. A. hear from B.worry about C.learn from D.think about 6.—I wonder _____. —It was wonderful! We had fun at the city park. A. where you went last weekend B. how your last weekend was C. why you were busy last weekend D. what you did last weekend 7.—Sam, _____ run in the hallways. It's very dangerous. —Sorry, Ms. Black. A. do B.don't C.not D. doesn't 8._____ we always wait for another day, fruitlessly our life will pass away. A. Until B.If C. Although D. Whether 9.—Lucy, you can't use the phone _____ we are far from the gas station (加油站). —OK, I won't do that again. A. after B. when C. though D. until 10.The toys are so beautiful. I like _____ all of them. A.only B. yet C.almost D.never 二、阅读理解 Computers are useful, but they can also harm you. Usually, most other injuries happen suddenly. For example, if you fall and break your arms, it happens very quickly. But computer injuries happen slowly. Therefore, you need to learn to use a computer safely. Your Eyes Too much light can harm your eyes, so never sit too close to a computer screen. Your eyes should be at least 50 cm away from the screen. Remember to look away from it sometimes. This gives your eyes a rest. When you use a computer, the window should be on your left or your right. If it is behind you, it will reflect the light of the screen. If the window is in front of you, the sun and the screen will both shine into your eyes. Your Hands and Wrists(手镯) Hand and wrist injuries can happen because the hands and wrists move in the same way for hundreds of times. If you use a keyboard for a long time, follow these three rules: 1) Rest your wrists on something. 2) Keep your elbows at the same height as the keyboard. 3) Don't work all the time and exercise your hands, wrists and fingers in different ways. Your Back Some people sit for many hours in front of a computer. If you sit in the wrong way, you can harm your back or your neck, so you should sit with your back straight. The top part of the screen should all 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 every 30minutes and exercise your arms, legs and necks. Enjoy your computer, bu ... ...