学进去-教育应平等而普惠
试题
类型:阅读单选
难度系数:0.15
所属科目:初中英语

Your Internet experience is ruined(严重受损的) when the speed is too slow—it takes so long to open a web page and the show you’re watching stops every few minutes. This can cross you.

But this could become a thing of the past. On June 3, 2019, the Ministry of Industry and Information Technology(中华人民共和国工业和信息化部) announced(宣布) that China would allow the commercialization(商业化) of 5G. This means major(主要的) telecom carries(电信运营商) will start to provide 5G services.

5G promises much faster data(数据) download(下载) and upload(上载) speeds, and more stable(稳定的) connections. This means that you will be able to download an HD movie in seconds and only experience a short delay(延迟) when sending and receiving data. According to the Straits Times(海峡时报), 5G will be able to improve many most modern technologies, such as driverless cars, wearable devices(设备) and entertainment(娱乐).

With a 5G network, the short delay in information exchange(交换) will allow driverless cars to run more safely, as they will be able to communicate in real time and avoid dangers. At the same time, 5G-enabled(启用5G的) wearable devices will keep doctors paying attention to the health conditions of their patients all the time and warn them at once if there’s something wrong. VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.

1.What does the underlined word “cross” mean?
A.make you feel afraidB.make you feel angry
C.give you a feeling of sadnessD.please you
2.Which of the following is an advantage of 5G?
A.Its low price.B.Unstable connections.C.No delays.D.Its high speed.
3.What is the last paragraph mainly about?
A.What problems 5G may face.B.How 5G affects cars without drivers.
C.How 5G will be used in different areas.D.What changes 5G has brought us.
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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