Question

    5G is becoming more and more popular these days. 1. The first 5G video call was made on a Huawei Mate X phone on March 30, 2019, CGTN reported.

Shanghai is the first city in China to start a test run of 5G networks. About 100 times faster than 4G networks, 5G will allow people to download and upload(上传) things faster than ever. 2. Self-driving cars may be one of the biggest changes. 3. When the car sees an obstacle(障碍), it sends this information to a data center and waits for instructions. 4. 5G networks will reduce the time it takes and make the cars safer, CNN noted.

5. This refers to a much larger online network that connects everything and everyone. Very fast Internet speeds are the key to realizing it. For example, with IoT, your fridge could order eggs online when it notices that there are no eggs left inside. Meanwhile, China’s first 5G police station was recently shown in Bao’an district in Shenzhen. China Mobile Communication Corporation(CMCC) made Xiamen’s first 5G video call on April 27, 2019, bringing the city into the time of 5G.

A.It will also be used in other fields.

B.Today’s self-driving cars have one problem — lag.

C.China is racing to build a nationwide 5G network.

D.The car will crash if it doesn’t receive instructions in time.

E.It has improved a lot because of modern technology.

F.5G could also power the Internet of Things(IoT).

Answer

1.C

2.A

3.B

4.D

5.F

【解析】

本文是一篇说明文，介绍了当下的热门技术5G。

1.

根据下文The first 5G video call was made on a Huawei Mate X phone on March 30, 2019, CGTN reported. Shanghai is the first city in China to start a test run of 5G networks可知，中国正在加快部署5G网络。C选项China is racing to build a nationwide 5G network“中国正在加紧建设全国性的5G网络”符合语境，故选C。

2.

结合上下文About 100 times faster than 4G networks, 5G will allow people to download and upload(上传) things faster than ever和Self-driving cars may be one of the biggest changes可知，除了提高网速之外，升级5G后，自动驾驶汽车技术也会获得突破，故此处说的是5G还会应用到其他方面。A选项It will also be used in other fields“它也将应用于其他领域”符合语境，故选A。

3.

根据下文When the car sees an obstacle(障碍), it sends this information to a data center and waits for instructions. The car will crash if it doesn’t receive instructions in time. 5G networks will reduce the time it takes and make the cars safer, CNN noted可知，此处说的是应用5G技术之前，自动驾驶汽车技术所面临的问题。B选项Today’s self-driving cars have one problem — lag“今天的自动驾驶汽车有一个问题——延迟”符合语境，故选B。

4.

根据上文Today’s self-driving cars have one problem — lag. When the car sees an obstacle(障碍), it sends this information to a data center and waits for instructions可知，如今的自动驾驶汽车面临着接受指令延迟的问题，这会导致严重的后果。D选项The car will crash if it doesn’t receive instructions in time“如果不能及时接收指令，汽车会撞车的”符合语境，故选D。

5.

根据下文For example, with IoT, your fridge could order eggs online when it notices that there are no eggs left inside可知，此处说的是5G对物联网技术的影响。F选项5G could also power the Internet of Things(IoT)“5G还可以推动物联网（IoT）的发展”符合语境，故选F。