Question

【題目】 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（副市長）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（延遲）. When the car“ sees ”an obstacle（障礙物）, 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 物聯(lián)網(wǎng)）. 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.

根據(jù)短文內(nèi)容,選擇最佳答案.

【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（推論）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】

當人們看手機上方的時候，會看到3G或者4G的小符號。G代表手機網(wǎng)絡的"代"。但是，當5G網(wǎng)絡全面覆蓋時，這些符號將會成為過去時。3月30日，上海市長吳清第一次使用華為Mate X智能手機進行視頻通話，上海成為中國進行第一個測試5G的城市，5G將會在很多方面改善人們的生活。

【1】細節(jié)理解題。根據(jù)“Shanghai has also become the first city in China to start testing 5G metworks.”可知上海是第一個測試5G網(wǎng)絡的城市。故選B。

【2】推理判斷題。For example后接無人駕駛汽車例子是對上文“But 5G won’t just bring faster mobile Internet. People can use it for many other things as well.”解釋。解釋5G除了可以上手機上網(wǎng)快，還可以有別的用途。根據(jù)“…With 5G, this lag will be greatly lowered, making the cars safer…”可知，5G可以大大減少問題延遲，從而使無人駕駛汽車更安全。作者通過這個例子來告訴我們5G的告訴怎樣起作用的。故選D。

【3】推理判斷題。根據(jù)“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是一個將所有事和人聯(lián)系在一起的大網(wǎng)絡。故選C。

【4】推理判斷題。A選項意為“5G將遍布中國。”文章中并未提及，因此A選項是不正確的；根據(jù)“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信號會出現(xiàn)在手機上，而并未提及手機上沒有信號，因此B選項是不正確的；根據(jù)倒數(shù)第三段可知，現(xiàn)在無人駕駛汽車存在的問題是出現(xiàn)延遲，而5G會大大降低延遲，因此未來是可能購買無人駕駛汽車的，并不是現(xiàn)在，因此C選項是不正確的；根據(jù)“5G will let people download and upload data faster than ever before.”可知5G將會下載和上傳數(shù)據(jù)比以前快，因此可推斷5G速度比3G和4G快，因此D選項是正確的。故選D。

【5】推理判斷題。根據(jù)“The IoT could be used in a lot of ways.”可知這是句首點明中心的句子。For example后是對上一句話的解釋，因此介紹冰箱是為了介紹IoT的應用。故選B。