题型：完形填空 题类：常考题 难易度：普通
贵州省铜仁市松桃县2020届九年级上学期英语期末考试试卷
When people talk about air pollution, they are usually thinking about outdoor air 1. But do you know that there is also air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of the illnesses have 2 to do with the polluted indoor air. A lot of pollution comes from indoor activities 3 smoking and cooking. As most people 4 about 80%—90% of their time inside buildings, it is important to take indoor air pollution seriously, too. Air pollution influences our health 5. When the air is polluted, not only young children and old people 6 from it, 7 people without health problems suffer as well. Indoor air pollution can 8 people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also 9 to lung cancer and heart disease! In the Great London Fog in 1952, 4000 people died in a few days 10 the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!
Don't be too surprised if you see a car going down the road without a driver in Beijing these days. {#blank#}1{#/blank#}Last month, Baidu began to test its self-driving cars on open roads in Beijing.
{#blank#}2{#/blank#}Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self—driving cars.
Self-driving cars are safer than regular cars. {#blank#}3{#/blank#}They can remove the stress of driving and allow disabled or blind people to get around more easily.
{#blank#}4{#/blank#}In one test, researchers pointed a laser pointer (激光棒) at the car's sensors (传感器) while it was moving. The car mistakenly thought that the laser beam was in its way and slowed down or changed the direction.
The software that is used to direct the cars may not be safe enough. {#blank#}5{#/blank#}When we use our computers or smartphones, they sometimes crash (崩溃) without any reason. But if this happened to a self-driving car, the result could be deadly. Improvements to the software could be a solution to this problem.
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A. At times, it may break down. B. Self-driving cars began to develop in 2010. C. It might be one of Baidu's self-driving cars. D. But self-driving cars have their own problems as well. E. And they are more environmentally friendly than regular cars. |
House fires cause many deaths each year and a large number of these fires are unfortunately set by children.{#blank#}1{#/blank#}Kids must understand that they'd better not play with fire. You should keep matches and lighters out of their reach.
{#blank#}2{#/blank#} The main job of such an alarm is to protect you while you're asleep. You should have a smoke alarm outside each bedroom and on each floor of your home. You ought to have two plans for getting out of your house if there is a fire and practise these plans in the dark with your family.
A smoke alarm warns you of the danger. {#blank#}3{#/blank#}Take action immediately. When you come to a closed door, check it with the back of your hand. If it feels hot, there may be smoke or fire behind the door, so take care. Once you are out of your house, call the fire department from a neighbor's house. If a family member or a pet is caught inside, you shouldn't go back in. Firemen know how to perform rescues safely.
{#blank#}4{#/blank#} Change the batteries at least once a year. You should use the test button each month to see if the alarm and batteries are still working. A smoke alarm lasts about ten years. You ought to change it even if it seems to be working.
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A. Most of these deaths can be avoided B. But when you hear it, you don t have much time C. A smoke alarm is only good if it's working properly D. So, it's important to teach them that fire is a tool, not a toy E. A smoke alarm greatly reduces your chances of being hurt in a fire |
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