题型：阅读选择 题类：常考题 难易度：普通
浙江省台州市2020-2021学年九年级下学期英语第一次月考试卷
Have you ever seen a car without a driver? It sounds crazy, but these computer-driven driverless cars will soon be filling roads near you. Companies like Google and Tesla have been designing and testing these cars, and the technology is there.
So how? The cars have sensors (感应器) all around which can find other cars and objects in the road. Road signs are read by cameras, and satellite navigation systems (卫星导航系统) are used so the car knows how to get where you want to go. All you have to do is type in the address! Finally, a central computer system takes in all the information that it receives from the sensors and cameras and works out when to speed up, stop and turn.
Sound like your idea of heaven (天堂) ? Sitting back, looking out of the windows and even watching a film or reading a book while ‘driving' would be possible with this new technology. You wouldn't have to worry about remembering directions to where you're going. In addition, computers would also drive more safely than people — they would obey the rules and have quicker action times when in dangerous situations.
However, there are many drawbacks of driverless cars. Computers would have difficulties making ethical (道德的) decisions: if a child ran into the road, would the computer choose to hit the child or turn suddenly and potentially kill the car's passengers? Moreover, I personally find driving fun –I'd miss never driving a car myself. There would also be many other decisions to be made –should children, or drunk people, be allowed in a driverless car by themselves? Or would there need to be a person with a driving license in the car at all times?
I'm not certain I'd want a driverless car – but it's only a matter of time before they'll become more affordable and popular on our roads.
School years around the world
| I live in Alaska. Classes start in August. We have two breaks-a winter break and a spring break. The winter break is in December. The spring break is in March. Classes end in May. We don't go to school in the summer. Our summer vacation is very long! --Lauren |
| I'm from France. Classes start in September and end in July for summer vacation. We have breaks in October, December, February and April. I'm in middle school and I go to school five days a week. Elementary school students go to school four days a week. They don't go to school on Wednesdays! --Louis |
| I live in Australia. In my country, classes start in February and end in December. We don't have a long summer vacation, but we have three breaks! We have a fall break in April, a winter break in July and a spring break in September-October. --Oliver |
| I live in Spain. Our school year starts in September and ends in June. We have a long summer break from June to September. We also have two main breaks during the school year: a winter break in December and a spring break around Easter. We go to school five days a week, but we usually have a longer lunch break in the middle of the day. --Sofia |
On the bottom of most plastic packaging(包装), there's a small triangle(三角) with a letter or number written inside. These little symbols are not easy to be noticed, but are really important. They tel you what kind of plastic it is and whether it can be recycled (回收) or not.
Can it be recycled? | Types of Plastic | |
1. PET This is the plastic that you often see on supermarket shelves. It is used to make plastic water bottles and biscuit boxes. |
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✔ | 2. HDPE HDPE is a stronger type of plastic. It is what milk-bottles are made of. |
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× | 3. LDPE LDPE is a very soft plastic which is not easily broken. It is what shopping bags are made of. |
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× | 4. PS(POLYSTYRENE) This plastic is often seen in our daily life. You' ll probably have seen it as those cheap white cups you get hot drinks in, or as takeaway food packaging. |
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