If you look around the room you are in right now, you’ll probably notice a number of electronics. But can you imagine if they all had to be joined together by wires ( 电线 )? Picture the wire snaking along the floor, for example, from your smartphone to your speaker, or connecting your game controller to the computer screen, meaning you could never sit more than a couple of meters away from it. A world of electronics connected by wires wouldn’t just be untidy, but a possible danger, too. That’s where Bluetooth comes in. We’ve all heard of it — but what exactly is it?
Bluetooth is a method of short-distance ( 短距离 ) wireless communication between electronics that makes use of the power of radio waves. The idea was first thought of by Dr. Janp Haartsen at Swedish mobile company Ericsson in 1994. Things really stepped up in September 1998 when the Bluetooth Special Interest Group (SIG) was set up to develop and spread the technology. Bluetooth 1.0 came out in 1999, and a year later it began to be used in mobile phones and desktop computers. Now Bluetooth has become an increasingly popular way of solving the problem of more and more electronics needing to be connected. without having to connect everything together with wires.
But if you look at the remote control ( 温控器 ) you use to choose the program on TV, you might rightly ask yourself why Bluetooth was such a big deal. After all, connecting objects with infrared signals ( 红外信号 ) which can’t be seen had been done before. The problem with remote controls is that they need to keep what is called “line of sight”. If something is standing between the remote control and receiver, it won’t work. Because Bluetooth uses radio waves, the things standing in the way are no longer a problem.
Since its creation in the late 1990s, the technology has become more and more improved and widely used, with the 4 billionth Bluetooth objects shipped in 2020.
27 . How does the writer lead in the topic “Bluetooth” in Paragraph 1?
A . By describing scenes. B . By comparing facts. C . By telling stories. D . By explaining reasons.
28 . With the setting up of SIG, Bluetooth ________.
A . started to be used in cars B . made radio waves known to people
C . improved and spread quickly D . was able to connect all electronics
29 . From Paragraph 3, we mainly get to know the ________ of Bluetooth.
A . development B . popularity C . standard D . advantage
30 . ________ will most probably be interested in this text.
A . Phone sellers B . Technology fans C . Newspaper reporters D . History lovers
A 28 . C 29 . D 30 . B
【导语】本文主要介绍了蓝牙的发展过程。
27 .推理判断题。根据 “If you look around the room you are in right now, you’ll probably notice a number of electronics...” 可知第一段描述了一个由电线连接的电子世界,不仅不整洁,而且也很危险,由此引出了本文的话题 —— 蓝牙,所以作者通过描述一个场景引出话题。故选 A 。
28 .细节理解题。根据 “Things really stepped up in September 1998 when the Bluetooth Special Interest Group (SIG) was set up to develop and spread the technology” 可知蓝牙特别兴趣小组 (SIG) 用以开发和传播该技术。故选 C 。
29 .主旨大意题。根据 “But if you look at the remote control ( 温控器 ) you use to choose the program on TV, you might rightly ask yourself why Bluetooth was such a big deal” 以及本段内容可知,本段主要介绍了蓝牙的优势。故选 D 。
30 .推理判断题。本文主要介绍了蓝牙的发展过程,所以科技爱好者会对这篇文章感兴趣。故选 B 。
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A wedding(婚礼) Invitation
You’re invited to the wedding of Carrie and Henry at St John’s Church(教堂), on Saturday January 24th at 3:30 p.m. and dinner at the Blue Sky Restaurant, at 6:00p.m.
R.S.V.P: December 29th
Dear Joe, I’m so excited and I have to enjoy the news with you. Today is December 23rd, I got a very special invitation from Carrie before Christmas Day(圣诞节). Do you remember the party for the Sydney group at Henry’s house? And do you remember my best friend, Carrie? Well, guess what? Carrie and Henry are getting married? It’s so romantic! Love is here! Carrie and Henry are having a big wedding at St. John’s Church. Monica and James are going to their wedding. Oh, I can’t wait to enjoy it. I got the invitation and it is for two people. Can you come to the wedding with me? Carrie and Henry are going to Suzhou for their honey moon(蜜月). I’m buying them a camera for their wedding. But before the wedding, I’d like to get my hair cool and buy a pink dress first. Call me at 9:00 a.m., on Friday, January 23rd, OK? Maria |
36. Maria got this wedding invitation from .
A. Carrie. B. Joe. C. Monica. D. James
37. Monica and James are taking part in the wedding on .
A. Friday morning. B. Friday afternoon. C. Saturday morning. D. Saturday afternoon.
38. What does “getting married” mean in Chinese?
A. 参加聚会 B. 过圣诞节 C. 做礼拜 D. 结婚
39. The friends to the wedding party are going to have dinner .
A. in Suzhou. B. at Henry’s house C. at St John’s Church D. at the Blue Sky Restaurant
40. From the invitation card, we know that .
A. Monica is having fun in Suzhou. B. they are having the wedding in January.
C. Monica is going to buy a camera for Joe D. the wedding dinner starts at 7:00 p.m.
Do you have pen pals? I have three pen pals from three different countries. They are Tom, Ella, and Molly.
Tom comes from Australia. His favorite subject is P.E., because he likes playing soccer best and he can play it in P.E. classes. He has a sister and a brother.
Ella is an American girl. Of all her subjects, she likes Chinese best. She often writes to me in Chinese. Her favorite sport is volleyball.
Molly lives in Tokyo. She likes learning Chinese, too. But her favorite subject is math. When she has time, she likes playing tennis best. She is a very clever girl.
I love them very much.
根据短文内容,将表格补充完整。
Name | From | Living place | Favorite subject | Favorite sport |
Tom | Australia | / | 1. ______ | soccer |
Ella | 2. _____ | / | Chinese | 3. _____ |
Molly | / | 4. ____ | 5. _____ | tennis |