【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" of your mobile network. But these symbols will become things of the past after the 5G network fully arrives.

The 5G mobile network is 100 times faster and has 1,000 times more capacity compared with 4G mobile network.

In recent years, China has paid great attention to the commercial (商業(yè)的) use of 5G and made great efforts to introduce the infrastructure(基礎(chǔ)設(shè)施) for the 5G network. On March 30, Shanghai vice-mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone, CGTN reported. Shanghai has also become the first city in China to start testing 5G 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--lags. When the car sees" an obstacle, it sends this information to a data center and receives instructions.

However, it takes time to send and receive this information. With this kind of lag, the cars might crash because they don' t receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer, according to CNN.

5G could also be used to power the Internet of Things (IoT). This refers to a large online network that connects all things and people. Fast Internet speeds will be the key to developing this technology. For example, with loT, your refrigerator could order eggs online when it notices that there are no eggs left inside.

【1】In which city was 5G tested for the first time in China? .

A.ShanghaiB.BeijingC.ShenzhenD.Guangzhou

【2】We can infer from the passage that .

A.China will pay little attention to the use of 5G

B.there will be no difference between phones

C.we can now buy self-driving cars in low price

D.the 5G mobile network is much faster than the 4G mobile network

【3】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 5G's fast speed can be helpful

【4】What does the underlined word "obstacle" in Paragraph 4 most probably mean? .

A.障礙物B.車(chē)載物C.答案D.動(dòng)物

【5】According to the passage, the loT is .

A.a robot that can do housework

B.a large online store where you can buy anything you want

C.a large online network that connects everything and everyone

D.a type of high-tech refrigerator

【答案】

【1】A

【2】D

【3】D

【4】A

【5】C

【解析】

你聽(tīng)說(shuō)過(guò)5G嗎？5G時(shí)代真的要來(lái)了。這篇短文給我們講述了什么是5G，這個(gè)新的技術(shù)會(huì)給我們的生活帶來(lái)哪些變化。

【1】細(xì)節(jié)理解題。根據(jù)短文第二段中On March 30, Shanghai vice-mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone, CGTN reported. Shanghai has also become the first city in China to start testing 5G networks.可知，在3月30日，上海副市長(zhǎng)進(jìn)行了第一次5G視頻通話(huà)，上海成為中國(guó)第一個(gè)開(kāi)始測(cè)試5G網(wǎng)絡(luò)的城市。由此可知應(yīng)選A。

【2】細(xì)節(jié)理解題。根據(jù)短文第二段The 5G mobile network is 100 times faster and has 1,000 times more capacity compared with 4G mobile network.可知，5G移動(dòng)網(wǎng)絡(luò)的速度是4G移動(dòng)網(wǎng)絡(luò)的100倍。由此可知D選項(xiàng)是正確的。

【3】推理判斷題。根據(jù)短文第四段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.可知，作者用自動(dòng)駕駛汽車(chē)作為例子，告訴我們5G網(wǎng)絡(luò)的使用不僅是給我們帶來(lái)更快的移動(dòng)網(wǎng)絡(luò)，它的快速還有很多其他的用途。故應(yīng)選D。

【4】詞義猜測(cè)題。根據(jù)劃線(xiàn)單詞所在的語(yǔ)境When the car sees" an obstacle, it sends this information to a data center and receives instructions.“當(dāng)汽車(chē)‘看到’一個(gè)……，它把這個(gè)信息傳送給一個(gè)數(shù)據(jù)中心并接收指令”，再結(jié)合這里說(shuō)的是自動(dòng)駕駛汽車(chē)，因此obstacle是“障礙物”，故應(yīng)選A。

【5】細(xì)節(jié)理解題。根據(jù)短文最后一段5G could also be used to power the Internet of Things (IoT). This refers to a large online network that connects all things and people.可知，IoT是Internet of Things“物聯(lián)網(wǎng)”的縮寫(xiě)，它指的是一個(gè)大型的網(wǎng)絡(luò)，這個(gè)網(wǎng)絡(luò)將所有的東西和人們聯(lián)系起來(lái)。由此可知這里應(yīng)選C。

這是一篇科普說(shuō)明文，短文介紹了新的5G技術(shù)給我們的生活帶來(lái)的變化。短文主題明確，敘述清晰，但句式較復(fù)雜，專(zhuān)業(yè)性較強(qiáng)，在理解上有一定的難度。題型是閱讀理解，題目設(shè)置有細(xì)節(jié)理解、推理判斷、詞義猜測(cè)等。如第3小題，題目問(wèn)的是“作者以自動(dòng)駕駛汽車(chē)為例是為了什么”，根據(jù)題目中提到的self-driving cars可定位到根據(jù)短文第四段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.可知，這個(gè)例子告訴我們5G網(wǎng)絡(luò)的使用不僅是給我們帶來(lái)更快的移動(dòng)網(wǎng)絡(luò)，它的快速還有很多其他的用途。故應(yīng)選D。再如第4小題，這是一個(gè)猜詞題，做題時(shí)應(yīng)注意結(jié)合語(yǔ)境。根據(jù)劃線(xiàn)單詞所在的語(yǔ)境When the car sees" an obstacle, it sends this information to a data center and receives instructions.“當(dāng)汽車(chē)‘看到’一個(gè)……，它把這個(gè)信息傳送給一個(gè)數(shù)據(jù)中心并接收指令”，再結(jié)合這里說(shuō)的是自動(dòng)駕駛汽車(chē)，因此obstacle是“障礙物”，故應(yīng)選A。

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