05 航空航天-冲刺2022年中考英语必考题之热点素材题型专练

备战2022中考英语常考题之热点素材题型专练 05 航空航天 一、完形填空 （2021·江苏·南京玄武外国语学校） 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 ____1____ 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 (干扰) to the aircraft’s radios. Pilot can hear this interference in their headphones. “It’s the same ____2____ you’ll be familiar ( 熟 悉 的 ) with, if you put your mobile too close to a speaker,” the Mirror noted. “It is not safety critical, but is annoying (烦人的) for sure.” Though speaking on a phone during a flight isn’t ____3____ , 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 call tower that ____4____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 ____5____ , for this system to work, there are “built-in” expectations ( 期 待 ): They shouldn’t be too many “handoffs”; people shouldn’t be traveling faster than car speeds and phone users should be close to the ____6____ . If we were to make phone calls while we flew, however, none of these expectations would be met. And even ____7____, our cellphones would stop working. But now things are beginning to change. If we ____8____ can’t speak during a flight, we can use other phone functions. For example, Airbus A330 of Emirates Airlines (阿联酋航空) has inflight wifi to make passengers send and receive short messages in the air. In the future, as Bilen points out, it may be ____9____for air travelers to make and receive calls freely. The breakthrough could be “pico cells”, which are small cell towers on the phone itself. There would no longer be connections _____10_____ between phones and the ground and therefore there would be no danger of disruption (破坏) to phone service. One day