Question

【题目】 If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G. The G stands for the“generation（代）”of your mobile network. But these symbols will become things of the past after 5G networks fully arrive.

On March 30th,2019, Shanghai vice-mayor（副市长）Wu Qing made the first 5G video call on a Huawei Mate X smart phone, CGTN reported. Shanghai has also become the first city in China to start testing 5G metworks.

About 100 times faster than 4G networks. 5G will let people download and upload data faster than ever before. But 5G won’t just bring faster mobile Internet. People can use it for many other things as well.

For example, 5G will help to make self-driving cars safer. Today’s self-driving test cars have one problem lag（延迟）. When the car“ sees ”an obstacle（障碍物）, it sends the information to a data center and receives instructions. However, it takes time to send and receive information. With this kind of lag, the cars might crash because they don’t receive instructions in time. With 5G, this lag will be great lowered , making the cars safer, according to CNN.

5G could also be used to power the Internet of Things（IoT 物联网）. This refers to a large online network that connects all things and people. Fast Internet speeds will be the key to develop this technology.

The IoT could be used in a lot of ways. For example, with IoT, your refrigerator could automatically place an order online for eggs when it finds that there are no eggs left inside.

根据短文内容,选择最佳答案.

【1】In which city was 5G networks tested for the first time?

A.Beijing.B.Shanghai.C.Shenzhen.D.Guangzhou.

【2】The writer uses self-driving cars as an example to______________ .

A.explain how self-driving cars work

B.show us how advanced self-driving cars are

C.warn about the possible dangers of self-driving cars

D.explain how 5Gs fast speed can be helpful

【3】According to the story, the loT is __________________.

A.a robot that can do housework

B.an online store where you can buy anything

C.a large online network that connects things and people

D.a type of high-tech refrigerator

【4】We can infer（推论）from the passage that _______________.

A.5G will be all over China.B.there are no symbols at the top of our phones

C.we can now buy self-driving carsD.5G networks are much faster than 3G and 4G

【5】The refrigerator is mentioned to .

A.describe the importance of IoTB.introduce how to use the IoT

C.ercourage people to try the new productD.show 5G will be more powerful

Answer 1

【答案】

【1】B

【2】D

【3】C

【4】D

【5】B

【解析】

当人们看手机上方的时候，会看到3G或者4G的小符号。G代表手机网络的"代"。但是，当5G网络全面覆盖时，这些符号将会成为过去时。3月30日，上海市长吴清第一次使用华为Mate X智能手机进行视频通话，上海成为中国进行第一个测试5G的城市，5G将会在很多方面改善人们的生活。

【1】细节理解题。根据“Shanghai has also become the first city in China to start testing 5G metworks.”可知上海是第一个测试5G网络的城市。故选B。

【2】推理判断题。For example后接无人驾驶汽车例子是对上文“But 5G won’t just bring faster mobile Internet. People can use it for many other things as well.”解释。解释5G除了可以上手机上网快，还可以有别的用途。根据“…With 5G, this lag will be greatly lowered, making the cars safer…”可知，5G可以大大减少问题延迟，从而使无人驾驶汽车更安全。作者通过这个例子来告诉我们5G的告诉怎样起作用的。故选D。

【3】推理判断题。根据“This refers to a large online network that connects all things and people.”可知其中This指代上文的IoT，因此IoT是一个将所有事和人联系在一起的大网络。故选C。

【4】推理判断题。A选项意为“5G将遍布中国。”文章中并未提及，因此A选项是不正确的；根据“If you look at the top of your phone, you’ll usually see a little symbol that says 3G or 4G.”可知3G和4G信号会出现在手机上，而并未提及手机上没有信号，因此B选项是不正确的；根据倒数第三段可知，现在无人驾驶汽车存在的问题是出现延迟，而5G会大大降低延迟，因此未来是可能购买无人驾驶汽车的，并不是现在，因此C选项是不正确的；根据“5G will let people download and upload data faster than ever before.”可知5G将会下载和上传数据比以前快，因此可推断5G速度比3G和4G快，因此D选项是正确的。故选D。

【5】推理判断题。根据“The IoT could be used in a lot of ways.”可知这是句首点明中心的句子。For example后是对上一句话的解释，因此介绍冰箱是为了介绍IoT的应用。故选B。