题型:阅读选择 题类:常考题 难易度:普通
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.
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. |
From small ants to big whales, almost all animals need to sleep. Some sleep a little. Some sleep a lot. And some have special ways to get their sleep.
Seabirds | Some seabirds spend most of their lives over the ocean. And they can sleep while they are flying. They can fly for many hours without moving their wings. |
Flamingos | A flamingo can sleep while standing on one leg. The standing leg always stays straight. The other leg stays close to its body. Its head rests on its back. |
Horses | Horses often sleep standing up. If a horse lies down, it needs a long time to get up. A horse can run from danger more quickly if it is already standing. And horses only need about three hours of sleep a day! |
Giraffes | Giraffes win the prize(奖) for sleeping the least. They sleep about 30 minutes a day, and 5 minutes at a time. They lie down when they sleep. They rest their heads on their bodies or on the ground. What a strange way of sleeping! |
Dolphins | A dolphin sleeps with just half its head at a time. The other half must stay awake(醒着的) to take in air and to watch for danger. Dolphin mothers and babies can go without sleep for as long as two months to stay safe. |
Piano lessons Very good musician from Australia Good at teaching kids for 10 years! Time: 9:00-11:00 am at weekends For more information, please visit Larry's Websites: www.music.com | Bear Show 9:00-11:00 am open from Monday to Friday Price: Adults $10 Children $5 Tel: 965-8623 |
Basketball Club Do you like to play basketball? Do you want to play it well? Mr Cai can teach you. You can come here every Saturday afternoon. Tel: 368-5778 Address: Room 212 in the National Sports Centre | Learning German Can you speak German? Do you want to learn German? Please join the German Club now. Call Joan at 345-1238. Time: 7:30 pm-9:30 pm (from Monday to Friday) |
试题篮