题目内容

Don’t be surprised if you see a car going down the road without a driver in Beijing these days.In March, 2018, baidu was given a license to test its self-driving cars in Beijing, China Daily reported.

Self-driving cars have been in development since 2010, when google announced that it was making such cars. Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self-driving cars.

self-driving cars are expected to change the way we get around. They are safer and more environmentally friendly than regular cars. They can remove the stress(压力) of driving and allow disabled or blind people to get around mroe easily.

But self-driving cars have their own disadvantages as well. In one test, researchers pointed a laser pointer(激光棒) at the car’s sensors(感应器) while it was moving. The car mistakenly thought that the laser beam(波束) was in its way and slowed down or changed directions.

The software(软件) that is used to direct the cars may not be safe enough. Reported Live science. Sometimes, without any reasons,it may break down when we use our computers or smartphones. If the software in a self-driving car happened to crash. The results could be deadly.Maybe improvements to the software could solve this problem.

1.when did Baidu get a testing license of its self-driving cars in Beijing

A. In february, 2018 B. in march,2018 C. in april,2018 D. in may, 2018

2.which company has firstly developed self-driving cars since 2010.

A. Google B. tesla C. Uber D. baidu.

3.the moving car may _____. if a laser beam is in its way.

A. Stop itself B. hit others C. slow down D. move on

4.the underlined word “crash” in paragraph 5 probably means___.

A. 奔溃 B. 碰撞 C. 暴跌 D. 坠毁

5.this passage may come from ____

A. A story book B. a travel guide

C. a sports newspaper D. a science magazine.

1.B 2.A 3.C 4.A 5.D 【解析】文章介绍了无人驾驶汽车的一些情况。 1.根据.In march, 2018, baidu was given a license to test its self-driving cars in Beijing可知在2018年3月,百度得到了无人驾驶汽车的检测证件;选B 2.根据self-driving ca...
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The simple activities below will make everyone in your family leave chair and help you get closer while burning some calories.

Jumping Rope

Jumping rope burns about 600 calories an hour. Jump ropes are cheap. The cheapest is less than 10 dollars .Also, because jump ropes are easy to carry, parents can pack one in their suitcase for exercise while they travel.

Hula Hooping

Hula hoops became popular toys in the late 1950s and are still a lot of fun for families. Hula hooping can burn more than 500 calories an hour.

Dancing

Why not dance to music when you are at home? Having a family dance party lets parents and children get happy while also getting some exercise. Hip hop dancing can burn 400 calories an hour.

Walking the Dog

Studies have shown that owning a dog can make you healthier. One reason may be that you are able to take more walks when you walk a dog. Walking the dog can burn 200 calories an hour. If you daily walks have become more like a chore, add some fun .Go as a family, pick different ways each day, and do some running.

根据材料内容选择最佳答案,将其标号填入题前括号内。

1.Which activity can burn the most calories an hour ?

A. Jumping rope B. Hula Hooping

C. Hip hop dancing D. Walking the dog

2.The exercises above __________________ .

A. can only be done outdoors B. can help families to get closer

C. are no fun at all. D. are difficult to do

3.If you feel bored because you walk the dog every day, you can do these things EXCEPT ______________ .

A. take less walks. B. go as a family.

C. choose different ways each day. D. do some running while you are walking the dog.

4.What can we learn from the passage ?

A. It is not suitable to carry a jump rope when traveling.

B. Jump ropes are easy to carry,

C. Hula hoops were created in the late 1950s.

D. The author likes doing chores.

5.This passage is probably from a ___________________ .

A. travel book B. website for pets C. family magazines D. jumping rope ad

1.A 2.B 3.A 4.B 5.C 【解析】本文介绍了几种简单的活动,可以帮助家人一起来燃烧卡路里并增进家人间关系。 1.句意:哪一项活动能在一小时以内燃烧最多的卡路里?A.跳绳B.呼啦圈C.嘻哈跳舞C.遛狗。跳绳每小时600卡路里,呼啦圈每小时500卡路里,跳舞每小时400卡路里,遛狗每小时200卡路里,故选A。 2.句意:上述的锻炼方式可以帮助家人...

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