阅读下面短文，掌握其大意，然后从1～15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Some passengers won’t turn off their mobile phones or iPads during takeoff or landing. It happens on almost every now. It’s time to turn off personal electronic devices when the plane’s door . However, there’s always at least one person who keeps talking, texting, playing, watching or emailing — and strict orders to power down during flights.
“People have bee so to those devices, and a lot of people whether they really need to turn them off,” says an airhostess from Southwest Airlines.
Is turning off the devices really in the first place? Lots of passengers have doubted about the of leaving devices on. They think one cell or message or game isn’t going to down the plane.
Indeed, there’s no scientific evidence that having devices powered on during takeoff and landing would cause a , only that there is the potential of a problem.
In the US, pilots are allowed to use certain electronic devices during takeoff and landing, but if passengers’ devices are tested at the same time, it may lead to wrong warnings and readings on the aircraft instruments. In some studies researchers found mobile phones could global-positioning satellite systems or other aircraft systems. Though the effects are slight, they could result in disaster.
If even the possibility of disaster exists, it’s better to turn them off during takeoff and landing.
【小题1】A．seatB．flight C．passengerD．device【小题2】A．opensB．closesC．turnsD．moves【小题3】A．givingB．obeyingC．ignoringD．receiving【小题4】A．addictedB．connectedC．opposedD．exposed【小题5】A．decideB．chooseC．understandD．question【小题6】A．reliableB．necessaryC．dangerousD．excellent【小题7】A．factB．valueC．dangerD．price【小题8】A．knockB．bringC．shutD．fall【小题9】A．largeB．greatC．firmD．heavy【小题10】A．problemB．difficultyC．questionD．mistake【小题11】A．smallB．expensiveC．variousD．colorful【小题12】A．clearB．rightC．badD．false【小题13】A．affectB．operateC．controlD．change【小题14】A．unusually B．strangelyC．exactlyD．seemingly【小题15】A．remotestB．biggestC．bestD．worstB
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(答案→)B
解析：文章介绍有的乘客在飞机起飞和着陆的时候，不愿意关掉手机或电脑这样的设备，他们怀疑开着这些设备的危险。虽然没有有力的科学证据表明在起飞或着陆的时候开着这些设备会导致问题。但是在一些研究中，研究人员发现手机会影响全球定位系统或其他飞行系统，因而存在安全隐患，所以最好是把它们关了。
【小题1】考查名词辨析：A. seat座位，B. flight飞行，C. passenger乘客，D. device设施，从上文的：during takeoff or landing.可知在每次航班的时候，都会发生这样的事情，选B
【小题2】考查动词辨析：A. opens开，B. closes 关，C. turns转弯，D. moves移动，当飞机门关闭的时候，就是关掉个人设备的时候了。选B
【小题3】考查动词辨析：A. giving给，B. obeying 遵守，C. ignoring 忽视，D. receiving接受，然而，总是至少有一个人一直在谈话，发短信，玩，看，或发电子邮件，不管在航班中关机的规定。选C
【小题4】考查形容词辨析：A. addicted上瘾的，B. connected有联系的，C. opposed反对的，D. exposed暴露的，人们已经对这些设备上瘾了。选A
【小题5】考查动词辨析：A. decide决定，B. choose选择，C. understand理解，D. question询问，质疑，很多人质疑是否应该关掉它们。选D
【小题6】考查形容词辨析：A. reliable可靠的，B. necessary必要的，C. dangerous危险的，D. excellent优秀的，首先关掉这些设备真的必要吗？选B
【小题7】考查名词辨析：A. fact事实，B. value价值，C. danger危险，D. price价格，很多人怀疑开着这些设备的危险。选C
【小题8】考查动词辨析：A. knock敲，B. bring 带来，C. shut关闭，D. fall跌倒，他们认为一个手机或短信或游戏不会让飞机倒下。选B
【小题9】考查形容词辨析：A. large大的，B. great伟大的，好极了，C. firm坚定的，D. heavy重的，确实，没有有力的科学证据表明在起飞或着陆的时候开着这些设备会导致一个问题。选C
【小题10】考查名词辨析： A. problem问题，B. difficulty困难，C. question问题，D. mistake错误，由下文的：only that there is the potential of a problem.可知选A
【小题11】考查形容词辨析：A. small小的，B. expensive 贵的，C. various各种各样的，D. colorful丰富多彩的，在美国，飞行员被允许在起飞和降落的时候使用一定的电子设备，但是如果乘客的各种各样的设备同时被检查的话，这就会导致错误的警告。选C
【小题12】考查形容词辨析：A. clear 清楚的，B. right正确的，C. bad坏的，D. false错误的，从上文的wrong，可知这里是：在飞机指南上面的错误的理解。选D
【小题13】考查动词辨析：A. affect影响，B. operate操作，做手术，C. control控制，D. change改变，从下文的：Though the effects are slight, they could result in disaster.可知在一些研究中，研究人员发现手机会影响全球定位系统或其他飞行系统。选A
【小题14】考查副词辨析：A. unusually通常，B. strangely奇怪地，C. exactly确切地，D. seemingly似乎地，虽然影响看起来很小，但是可能会导致灾难。选D
【小题15】考查形容词辨析：A. remotest最遥远的，B. biggest最大的，C. best最好的，D. worst最坏的，甚至有灾难存在的最遥远的可能性，最好还是在起飞和降落的时候关掉它们。选A