Have you heard of 5G ? It is the fifth generations (代) of mobile network technology (移动网路术) .These new networks are coming.
China just issued commercial license(发放商用牌照) for 5G . This means that China’s telecom(中国电信) companies will soon be able to offer SG networks for mobile phone users.
Each mobile network generation is faster and more powerful than the one before it . IG let us talk to each other. 2G let us send messages. 3G gave us data (数据) and the internet. And 4G made all of these things faster. What's special about 5G?
5G has a very short delay (延时) between sending and receiving information. Now, 4G takes about 100 to 200 milliseconds(毫秒) to send and receive data . But 5G will get it down to I millisecond. This big change will not only make our mobile internet faster. It will also deeply change our lives.
5G networks are about 100 times faster than 4G. This means you can download (下载) a movie in seconds. 5G will also bring us safer self—driving cars . These cars can send signals(信号)10 each other. 5G will allow cars to react(反应) even faster than real drivers.
Chinese tech company Huawei has me patents (专利)for 5G than any other company in the world. You will need to buy a new mobile phone to use 5G networks . 5G phones cost about 8,000 yuan right now. But experts (专家) say that about one and a half years from now, the price could go down to around 2,000 yuan .
【小题1】What is 5G?【小题2】What can we do with 2G?
【小题3】What's the difference between 4G and 5G?
【小题4】The title (标题) of this article is
【小题5】What can 5G technology bring to our life?
The Internet nowadays opens a wide world to people, including teenagers, but many parents worry that their children may meet with something unhealthy when searching online. In order to solve this problem, a new search engine for children called Kiddle has appeared.
Search results are filtered (过滤), so only safe websites are shown and descriptions are written in simple language. Searches with bad words are shut off, too.
Kiddle uses the same colors as Google in its logo and a similar design on its homepage, too—with an extra robot picture.
The top three Kiddle search results show safe websites and pages written specially for kids, and those websites and pages are well chosen and checked by Kiddle developers.
The fourth to seventh results will be safe and trusted websites that are not written specially for kids, but have content written in a simple way. These results are also chosen and checked.
Results on the eighth and onwards pages are safe and famous websites that are written for adults. They provide expert content, but are harder for kids to understand.
Unlike on Google, most results appear along with large thumbnail pictures (缩略图) to make it easier for children to find what they are looking for. For example, when searching for “meow meow”. Google produces pages for information about a drug (毒品) that has “meow meow” as its nickname (绰号), but Kiddle lists information only about cats, even with some cat cartoon pictures.
The company explained, “Websites which appear in Kiddle search results satisfy family—friendly requirements, as we filter websites with unhealthy content.”
Kiddle—a Child-Friendly Search Engine
Characteristics | ♦Only safe websites are shown. ♦Descriptions are written is simple language. ♦ | |
Logo | It uses the same colors as Google with a robot picture | |
Content | The top three search results | Websites and pages are written |
The fourth to seventh results | Websites are also worth | |
The eight and onwards results | Websites are safe and famous, written for adults, and they are not | |
♦Kiddle has many thumbnail pictures. ♦Kiddle only gives safe information. | ||
Advantage | Kiddle satisfies family-freindly requirements. |
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