单选题若A，B是正交矩阵，则下列说法错误的是（）。A AB为正交矩阵B A+B为正交矩阵C ATB为正交矩阵D AB-1为正交矩阵

钱穆认为：“讲到中国的地方行政，只能说是汉代好，唐代比较还好，宋代就太差了。”他评判三代地方行政好坏的依据是（）。

Passage1When it comes to airline travel, perhaps nothing has revolutionized the passenger experience more than airline apps. Indeed, they' re becoming so ubiquitous that more than 50 percent of U.S travelers have at least one airline app installed on their smart device, according to travel industry research firm Phocuswright.Maybe that's because apps make travel easier, and often are more functional than a kiosk or even an airline's own website. Passengers report that they' re often more quickly informed of a flight cancellation or gate change than an airline employee. Not all airline apps are created equal, but in general you can use an app to check in for a flight, change seats, and request and pay for an upgrade. Road warriors in particular appreciate mobile boarding passes and the ability to track their flights. Many airlines now offer free onboard streaming entertainment via apps. The Delta Air Lines app even allows users to track their bags, from check-in to carousel, while the Air France app lets passengers download magazines and newspapers from the airline's library 30 hours prior to departure.But what if you are traveling extensively on more than one airline? Global airline alliances have their own apps that allow you to view flights for all member airlines and their affiliates, including code share flights. In general, you can find flight schedules for all member airlines and track member airline flights. Airport information is available, as are details about local weather at the destination. Where's the nearest airport lounge? The app will locate it for you.The Sky Team airline alliance app goes a step further by letting its SkyPriority members (Sky Team Elite Plus members and customers with first and business-class tickets) find out exactly which SkyPriority services-including priority check in and baggage drop off, as well as access to priority security lanes and boarding lanes-are available at individual airports.You' ll find that some alliance app features are available through multiple channels of communication. For example, Sky Team members have formed their own online community by sharing traveler tricks and airport tips accessible through a variety of channels, including the app, Sky Team's website, Facebook page and a dedicated tips site. Sky Team's YouTube page features travel tips from regional celebrities.Just as airlines seem to have conquered social media, another method of communicating with travelers has just arrived. KLM Royal Dutch Airlines is the first carrier to sign up for Facebook's Messenger chat app. KLM flyers can automatically receive itineraries, flight updates, check-in notifications, boarding passes and rebook flights and communicate with customer service, all from Facebook Messenger. Messenger for Business was launched so that customers-in this case, passengers-can transact business over the messaging app in a single communication thread. Roughly 80 percent of passengers on planes traveling within the U.S. have the Messenger app installed on their smartphones, according to Facebook.Clearly, mobile apps and social media have transformed our digital lives. Airlines favor apps and other technologies because they get customers out of airport lines and off phone lines. Through their smart devices, travelers now have untethered access to travel information. A few quick taps can supply individuals with information never dreamed possible even a decade ago. And with more people using smartphones as their primary computing device, and as more people own cellphones globally, people expect technology-driven methods of communication and convenience to accelerate. Whether you' re high-tech or not, you must admit that having immediate access to the information you need sure beats getting a busy signal on a toll-free phone line.Which word below best describes the author's stance？

1939年国民政府政策重心发生转变的直接原因是（）。

某国际问题研究专家指出：“世界正从根本上发生改变……这些根本性变化中，最重要的一个因素就是，地缘政治权势与地缘经济实力正在同时从发达国家向发展中国家、从西方向东方转移。”材料主要反映出（）。

某版教科书把《烛之武退秦师》《荆轲刺秦王》《鸿门宴》三篇课文编排在一个单元。下列对该单元的教学建议不恰当的一项是()。

1947年马歇尔发表声明，“任何图谋阻挠别国复兴的政府，都不能指望得到我们的援助”。欧洲复兴计划“必须是联合性质的，即使不能取得所有欧洲国家的同意，也应该取得一部分国家的同意”。由此可见，马歇尔计划的实施（）

标志着第三世界国家作为独立的政治力量登上国家舞台的事件是（）。

有些元素在细胞中含量很少，但对于生命体而言却必不可少，下列属于该类元素的是（）。

“挤进效应”最早是由加拿大经济学家迈克尔？帕金在其所著的《经济学》一书中提出来的。所谓“挤进效应”，是指政府采用扩张性财政政策时，能够诱导民间消费和投资的增加，从而带动产出总量或就业总量增加的效应。下列能够产生“挤进效应”的举措有（）。 ①国家增发国债，加大财政补贴 ②降低税率，提高征税起征点 ③国家增发纸币，加快货币流通 ④降低利率，降低居民储蓄率

据《山东东吕府馆陶县志》载：清中叶“本邑男耕妇织，各务本业，大布（俗称粗布）一种输出境外，远销晋省。夏麦秋粮，每值丰收，水路可由卫河运至天津销售，尔时布缕粟麦鸡子等皆为输出物之大宗。”此记载反映出当地（）①自然经济占主导②农业结构发生变化③商品经济发展④对外贸易发达

小张打算赴法国参观巴黎大学，他从网上搜集了有关中世纪西方大学的信息。其中正确的是（）

1964年第二次不结盟国家首脑会议纲领指出：“帝国主义、殖民主义和新殖民主义是国际紧张局势和冲突的一个基本根源。”1973年第四次首脑会议号召不结盟国家要“通过有效行使反对霸权的国家主权来巩固它们的独立”“拒绝任何形式的奴役和依附、任何干涉和压力”。材料强调不结盟运动国家（）。

《黄河大合唱》中有两首分别是男声独唱和女声独唱，它们是（）。

随着古籍整理体例的不断完善、学术研究成果的不断涌现，修订点校本的需求日益突出。在著名学者季羡林、任继愈、何兹全、冯其庸的倡议下，中华书局于2007年起，全面展开点校本《二十四史》及《清史稿》修订工程。重视整理文化典籍，是基于它（）①是中华文化一脉相传的重要见证②是变革社会的强大物质力量③有利于挖掘和保护当代文化④可以帮助人们认识中华文化

“英军事当局，对于中国津浦（天津—南京浦口）线之战局极为注意。最初中国军队获胜之消息传来，各方面尚不十分相信，但现已证明日军溃败之讯确为事实„„英人心理，渐渐转变，都认为最后胜利当属于中国。”这是1938年4月9日伦敦路透社的一则电讯。该电讯报道的战役是（）

二十世纪六十年代以来，韩国、新加坡经济高速增长，经济发展的风险也相应增加。造成其风险增加的主要因素是（）

《社会主义研究》杂志1986年第3期载文指出：“巴黎公社基本上是按照蒲鲁东（法国小资产阶级思想家）的地方自治原则和布朗基的空想共产主义思想建立起来的一个城市自治政权。”这反映出巴黎公社（）

音乐术语中largo指的是（）。

英国历史学家霍布斯邦认为，“虽然这场双元革命——更精确地说是法国政治革命和英国工业革命——的主要载体和象征是法、英两国，但是，我们不应该把这场革命看成是属于这两个国家的历史事件，而应看做是一座覆盖了更广泛地区的火山的孪生喷发口”。他强调的是（）

2014年11月9日，德国首都柏林举行各种活动，纪念柏林墙倒塌25周年。德国总理默克尔出席纪念活动，并在她最新的网络podcast（播客）中说：“我希望你们永远都不会忘记那一天的感受，至少我将永远都不会忘记。”默克尔所说“不会忘记那一天”的原因是（）

简述教学设计的一般程序。

李文治《中国近代农业史资料》记载，根据那个时候（五口通商后）西方人的观察，“中国工人众多，有用之不竭之势。所得区区工价，实非美国工人所能自给。上海如此，他处尤为便宜，盖该口工价已较内地丰厚。致远方男女来谋食者日繁有徙，虽离家不计也”。材料中这一状况出现的原因（）。

When a student said Yesterday I goed to see a friend of mine, which of the following ways for corecting errors is NOT encouraged？

某一时期的艺术“用古希腊罗马的方法展现人体美和自然美，突破了宗教对人体的禁忌，以世俗人物的形象刻画宗教人物，以市民阶级的审美标准来诠释世界”。可见这一时期的艺术（）