题型：阅读选择 题类：常考题 难易度：普通
浙江省人教版初中英语七年级上册Unit 9第2课时Section A Grammar Focus~3c同步练习
Sally Smith is a teacher in a middle school. She goes to school at seven thirty. Her classes are from 8:00 to 8:40. All the students like her Chinese classes a lot.
But in March, the students are always sleepy in class. They don't listen to her in class. Sally Smith is not happy about this. "How can I make my classes more(更加) interesting?" she thinks.
Then she has a good idea(主意). She comes to the classroom, and then. she starts to tell her students some interesting riddles(谜语). All the students like the riddles. They are very happy in class. They like Sally's classes again.
A company called SkyDrive showed its new flying car，the SD—03.The small car could stay about 1 to 2 meters above the ground，and fly around for 4 minutes with a driver on board.
{#blank#}1{#/blank#} They hope that flying cars will be used for short trips in cities in the future.Flying cars can save time and help reach places easily.
{#blank#}2{#/blank#} With lots of cars flying around，people need to control the traffic in the air.And it is too difficult for people to control in real time.
Safety is another problem.If flying cars fall from the sky，it will hurt not just the people in the car，but people on the ground{#blank#}3{#/blank#}
Cars and airplanes had lots of problems at first，too. {#blank#}4{#/blank#}
Tomohiro Fukuzawa，the CEO of the company，wants the flying cars to be able to fly two people on trips of up to 5 kilometers by 2023.By 2050， "{#blank#}5{#/blank#}".
A.With time，these problems have been solved. B.Many countries are studying flying cars. C.But flying cars have some problems，too. D.I think flying cars will be widely used in the future. E.How can the flying cars solve the problems？ F.So make sure the flying cars are comfortable enough. |
Lab Safety Rules Science labs offer great opportunities for learning, teaching, and research. They also pose hazards that require proper safety precautions. Stay safe when conducting your labs by following these guidelines. |
Dress appropriately Tie back long hair, and wear suitable gloves, googles, and other protective equipment. | Proper supervision Don't perform lab experiments without instructor supervision(unless given permission to do so).
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| Know location of emergency numbers & safety equipment Know the location of safety equipment and emergency phone numbers (such as poison control) so you can access them quickly if necessary. |
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No food Don't eat or drink in the lab and never taste chemicals. |
ID hazards Identify hazardous materials before beginning labs. |
Be attentive Be attentive while in the lab. Don't leave lit Bunsen burners unattended or leave an experiment in progress. | ||||
Be careful when handling hot glassware Turn off all heating appliances when not in use. Keep flammable your workspace. | | |||||
Keep a clean workspace Don't obstruct work areas, floors, or exits. Keep coats, bags and other personal items stored in designated areas away from the lab. Don't block sink drains with debris. | Handle glassware carefully Properly dispose of anything that breaks. Report cuts, spills and broken glass to your instructor immediately
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Clean up After completing the lab, carefully clean your workspace and the equipment, and wash your hands. | ||||
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