Ⅰ. 阅读理解
(2021·合肥模拟)
Every time we get on a plane, we’re asked to either turn off our phones or change them to flight mode—it’s for “security reasons”. But according to The Conversation website, having to turn our phones off on a plane is “a service issue, not a safety one”. When we speak on our phones in the air, they can cause interference to the aircraft’s radios and pilots can hear this interference in their headphones. “It’s the same noise you’ll be familiar with, if you put your mobile too close to a speaker, ” the Mirror noted. “It is not safety-critical, but is annoying for sure. ” Though speaking on a phone during a flight isn’t dangerous, from the viewpoint of service, it isn’t still a good idea.
When we make or receive a call on the ground, we connect to a cell tower that deals with all calls within an 80-kilometer radius (半径). As we move from place to place we are “handed on” to different cell towers. As US scientist Sven Bilen explains, for this system to work, there are “built-in” expectations:There shouldn’t be too many “handoffs” and people shouldn’t be traveling faster than car speeds. “Of course, phone users should be close to the ground. ” he added. If we were to make phone calls while we flew, however, none of these expectations would be met. And even worse, our cellphones would stop working.
But now things are beginning to change. If we still can’t speak during a flight, we can use other phone functions. For example, Airbus A330 of Emirates Airlines has inflight WiFi to make passengers send and receive short messages in the air. In the future, as Bilen points out, it may be possible for air travelers to make and receive calls freely. The breakthrough could be “pico cells”, which are small cell towers on the plane itself. There would no longer be connections made between phones and the ground and therefore there would be no danger of disruption to phone service.
One day, perhaps, we will be chatting in the air as much as we chat on the ground.
【文章大意】本文主要介绍了在飞机上需要关闭手机的原因以及未来对可以在飞机上拨打或接听电话的期望。
1. Why are passengers required to turn off their phones on a plane?
A. Because using phones will pose a threat to their safety.
B. Because using phones may cause annoying noise to pilots.
C. Because turning off phones can ensure passengers a better service.
D. Because phones will fail to be connected to the cell tower when in the air.
【解析】选B。细节理解题。根据第一段When we speak on our phones in the air, they can cause interference to the aircraft’s radios and pilots can hear this interference in their headphones. 可知, 乘客在飞机上必须关闭手机的原因是使用电话可能会给飞行员带来烦人的噪音。故选B。
2. How many “built-in” expectations are mentioned by Sven Bilen to help make a phone call?
A. One. B. Two. C. Three. D. Four.
【解析】选C。细节理解题。根据第二段As US scientist Sven Bilen explains, for this system to work, there are “built-in” expectations:There shouldn’t be too many “handoffs” and people shouldn’t be traveling faster than car speeds. “Of course, phone users should be close to the ground. ” he added. 可知, 一共有三个内置期望被提到来帮助打电话。一、信号转移的次数不应太多。二、人们移动的速度不应太快。三、使用手机时应常靠近地面。故选C。
3. What can we infer from the passage?
A. People should travel slower than airplane speeds to make a phone call successfully.
B. Passengers are likely to make or receive phone calls freely on a plane in the future.
C. “Pico cells” have been applied by airlines to provide passengers with good phone service.
D. Passengers can receive calls on Airbus A330 of Emirates Airlines with the help of inflight WiFi.
【解析】选B。推理判断题。根据倒数第二段it may be possible for air travelers to make and receive calls freely可知, 航空旅客可以自由地拨打和接收电话。故选B。
4. Where is the text most likely from?
A. A science fiction. B. A travel journal.
C. A guidebook. D. A magazine.
【解析】选D。推理判断题。分析可知, 文章主要讲了在飞机上需要关闭手机的原因以及未来对可以在飞机上拨打或接听电话的期望。所以应该来自一本杂志符合题意。故选D。
【知识拓展】长难句分析
When we speak on our phones in the air, they can cause interference to the aircraft’s radios and pilots can hear this interference in their headphones.
分析:该句是复合句。when引导时间状语从句, 主句是and连接的并列句。
译文:当我们在空中用手机通话时, 它们会对飞机的无线电设备造成干扰, 飞行员可以在耳机中听到这种干扰。
