english is an official language of nearly ________ sovereign states.
in number of native speakers and language learners, english is the ________ language in the world.
the most native speakers of english live in _________.
english belongs to the _________ branch of the indo-european language family.
old english was mainly derived from the dialects of _________.
the origin of the words like “sky”, “egg”, “window” are from _________ countries.
“the canterbury tales” was written by _________.
proto-indo-european is believed to be the ancestor of most european languages, such as greek, german, spanish, french and italian.
the history of english can be briefly ided into three periods: old english, middle english and modern english.
english script and alphabetic system were from greek.
in 1588, england defeated the famous fleet armada from __________.
in 1604,a dictionary of the english language was published by ______________.
the sudden vowel shift in the history of english helped to shape ________ english.
which country does the loan word "lychee" come from?
which country does the loan word "yoghurt" come from?
which country does the loan word "violin" come from?
which country does the loan word "alcohol" come from?
which country does the loan word "shampoo" come from?
william shakespeare is a great writer in the _____________ language.
shakespeare was born in a all town in _______________.
shakespeare wrote 154 ___________ and some verses in his lifetime.
romeo and juliet is one of the most famous _____________ of shakespeare.
as you like it is a _____________.
romeo and juliet is one of the four most famous tragedies of shakespeare.
ben johnson described shakespeare as “ he belonged to all time”.
william shakespeare wrote 40 plays in his lifetime.
for something that has occurred in the recent past, bre tends to use the simple tense while ame shows the preference for the present perfect tense.
for the meaning of "在周末", british people" prefer to use "at the weekend" while american people will prefer "on the weekend".
for the meaning of "全家在看电视", british english will use "the family is watching tv." and american english will prefer "the family are watching tv.".
the word "颜色" is spelt in british english as "color".
the word "组织" is spelt in american english as "organize".
the word "中心" is spelt in british english as "centre".
the word "许可证" is spelt in american english as "licence".
in british english, "糖果" is expressed as candies.
the american expression of "玉米" is corn.
many words from hindi flew back to english, such as “bungalow”, “coolie”, “cashmere”, “ pajamas” and “yoga”.
now, english is used as the first language and official language in singapore.
in 1985, the people's republic of china made english the main foreign language in education.
________ is the official name of britain.
the full name of britain is the united kingdom of _________ britain and __________.
there are _______ parts in great britain and ________ parts in britain.
british isles include two large islands: _________ and ireland island.
the capital of the republic of ireland is _________.
the longest river in britain is _____________.
britain enjoys a ______________ climate.
“if winter comes, will spring be far behind?”comes from ode to the ______ wind by shelly.
the acts of union 1707 made the kingdoms of england and ________ united to form great britain.
july is normally the best month in a year and the west wind from the atlantic is the warmest.
jane austen has written “pride and prejudice”, “sense and sensibility” and other novels.
“ladies and gentlemen” only refers to those cultured and refined men and women. _______
scotland takes up half of great britain and is the second largest country in the uk.
the american movie “a water horse” is based on the tale of monster in loch ness.
kilt, tartan and bagpipe are all characteristic of scotland.
2014 referendum is the first time for the scottish to pursue freedom from the united kingdom.
in 2016 scotland still remains in the territory of the united kingdom.
the scots, welsh and irish are descendents of ___________.
wales is located in the _________ of great britain.
wales was not conquered by the english until __________.
the giant’s causeway was located in __________.
the capital of northern ireland is ____________.
much of the land in wales is pasture and only 22% of the land is arable. _________
today, a quarter of the welsh still speak welsh as their first language. _________
the greatest event of the year of northern ireland is the national eisteddfod. __________
the majority of northern irish people wanted to be independent but was forced to remain within the united kingdom. ___________
the nickname of ______ is “the grandmother of europe”.
the house of windsor starts from _________.
_________ ruled britain in shakespeare’s time.
the monarchy in britain has been passed in succession in the past 1000 years and has never been broken. _______
the age of constitutional monarchy began after the glorious revolution. _________
the king or the queen is the head of the uk and has no real power. _________
the members of the royal family have to earn money to support themselves. _________
1. the united states of america consists of 50 states and a federal government.
2. great salt lake is a major waterway that empty into the gulf mexico.
3. alaska is the largest state on the continuous continent.
1. the heads of which presidents are carved into mount rushmore?
2. the statue of liberty is a gift from the people of ___________.
1. which state does washington d.c. belong to?
2. the official home to the us president is ________
3. which of the following locations is not included in the free trail?
4. which of the following cities is the meeting place for the first and second continental congress?
1. which of the following does not represent freedom?
2. which of the following roads is called mother road?
3. which of the following roads represent highway from east to west?
the french and indian war was started owing to ______
french and indian war was between ______________.
which of the following is not included in the stamp act to tax on?
where was the first continental congress held?
1. which day is america’s national day or independence day?
2. who drafted declaration of independence?
3. who was the first president of america?
4. where was the second continental congress held?
1. the 1783 treaty of paris with great britain defined the large expansion of land west to__________
2. how far did captain meriwether lewis and the second lieutenant william clark reach on the journey commissioned by thomas jefferson?
3. which state is the place attracting thousands of gold-seekers?
4. which of the following state is secured by mexican-american war?
1. which of the following state is not slave-holding state in 1860?
2. which book conveyed the message that slavery was the root of social cruelty?
3. which is the hidden weapon that lincoln employed to fight with confederate army and finally achieved the reunion of the nation?
which subject is the compulsory subject to american students?
which examination should a student attend if he wants to go to the university in the uk?
3. how many years must a british student study in the university?
1. the university of cambridge was established in ________
. 2. in the following universities, which one doesn’t belong to the ivy league in america________?
in the following celebrities, who was not a graduate from cambridge university_________.
before you start your application, what’s the first thing you have to do?
what are needed in your college application process except________?
what is the most necessary material you need to submit if you want to apply to an undergraduate degree?
the score of toefl that a test taker gets can be hold valid for ________ years.
which of the following sentences about those international tests are true except ________?
ets has _________ toefl test centers in________ different countries.
which of the following food does not belong to british traditional food?
full english breakfast is a very substantial meal enjoyed by both the nobility and the working class.
a traditional english breakfast usually consists of eggs, bacon, sausages, fried bread, baked beans, black pudding, tomatoes and mushrooms.
a full english breakfast is same in different regions in britain.
many british and irish cafés and pubs serve the full english breakfast at any time as an "all-day breakfast".
a typical sunday roast usually consists of roasted meat, roast potato or mashed potato, with accompaniments such as yorkshire pudding, stuffing, vegetables and gravy.
the most common joints for sunday roast are beef, lamb or pork. chicken is not popular.
which of the following statements is not true?
the history of fast food in america runs parallel to the invention of the car.
fast food franchises became quite popular thanks to their standardized menus, signage, and advertising.
in china, the first 24-hour fast food restaurant was opened in the tang dynasty.
the friendly carhop person began to wear roller skates to speed service by the 1980s.
which of the following statements about tea is false?
which of the following statements about boston tea party was true?
the monopoly on imports held by the merchants of the east india company kept tea prices artificially high to protect profits, and on top of this government imposed a high level of duty.
to avoid taxation and cater for the increasing need of tea, uggling and eration appeared.
after the cut of the taxation, there was a matter involving tea in american colonies, known as “boston tea party”, which eventually sparked off the american war of independence.
which of the following statements about coffee was false?
seattle can be called america’s capital of caffeine.
starbucks has grown into the second largest coffeehouse company in the world.
america is the largest producer of coffee in the world.
the world's first starbucks opened in new york.
which of the following statements is not true about british pub etiquette?
what can you enjoy at a british pub?
which of the following statements is true about the cocktail party?
the history of british pubs can be traced back to roman taverns.
people will wait in line to buy drinks if there are many people in a british pub.
the sister sunday issue of the guardian is ___________________.
which newspapers’ nickname is “the old gray lady”?
which of the following magazines is not an american magazine?
britain has one of the highest levels of newspaper sales per head of population, and the british are among the most enthusiastic readers of europe.
in britain, many local dailies appear in the evenings while the main titles in the national daily press appear in the mornings.
british daily papers have no sunday editions, but there are sunday papers.
u.s. news is well known for naming a “person of the year” while time publishes annual ratings of american colleges and universities.
reader's digest is an american general interest family magazine, which offers condensed articles from a wide variety of publications.
of the five following statements about bbc radio services, which is false?
which of the following hit dramas was presented by itv?
which of the following companies is not an american broadcaster?
which of the following statements about the emmy award is not true?
which of the following statements about news agencies is true?
which of the following four statements about american media giants is not true?
which of the following statements is not true about the academy award?
hollywood, the birth place of american movie studios, is a district in the central region of los angeles, california.
tcl chinese theatre is one of the landmarks in hollywood.
who was the founder of facebook?
which of the following statements is false?
google is a web search engine.
instagram, pintestest, vine, tumblr and twitter are among the most famous social networking services in britain and america.
twitter enables users to send and read short 150-character messages called "tweets".
which of the following works was written by jane austen except______?
jane austen was born in steventon, england, in ______.
between the 18th century and 19th century, social advancement for men was through the following careers except _________.
which of the following writers doesn’t belong to american romantici?
which of the following description is true about american romantici?
henry david thoreau seems to be the _______ literary figure in the american history to revolt against the threat that industriali and materiali brought to people’s daily life.
when was david copperfield published?
which of the following works is not written by charles dickens?
mark twain (1835-1910) is one of the prominent ______ writers.
ernest miller hemingway won the nobel prize in the year of _____.
the harry potter series have gained popularity and commercial success worldwide since its first book been released in the year of ______.
harry potter is a series of seven ______novels.
the central themes in harry potter always involve tolerance of other people and _________.
the word “etiquette” comes from german and means a code of good manners and behaviors for social interactions in english.
customs refer to short-established social rules that are considered acceptable or normal behavior in any situation.
etiquettes and customs are not written in law but are shared throughout a community.
generally speaking, good manners, politeness, friendliness and consideration for others are considered important and valuable by the most people.
we can address a lady “ms” if we are not sure if she’s married or not.
since americans don’t have inherited titles, we should address them their first names all the time.
the ill and physically unable people can remain seated when being introduced.
where to sit in a western dinner is often determined by the identities and social status of diners.
in a western dinner, the most important female guest always sits to the right of the hostess.
the appetizer is always served as the second dish after soup in a western dinner.
wines should be served in the sequence "white before red, light before heavy, young before old".
the tradition of wearing white gown in the western wedding started from __________.
the bride should wear “something blue”, which represents a ________ to love and marriage.
the spectacular royal wedding of prince william took place in __________.
for most americans, a typical american marriage is based on __________.
in the uk, on the 29th of february in a leap year, the girl can propose to her partner.
when the groom lifts the veil and kisses his bride, the wedding is over.
compared with wedding ceremony in britain, marriage traditions in america are more free and flexible.
in the uk, the reason for tipping is to show your appreciation for the service.
in restaurants in america, if you do not pay the service, you have not paid the entire bill.
if you meet some western friends for the first time, it is appropriate to give gifts between each other.
westerners like to give and receive all, simple and inexpensive gifts to their friends. _________
the legal age to purchase alcohol is 18 in both britain and america.
in the 1920s denmark street in london’s west end was also called “britain’s tin pan alley”, because it was home to many music shops.
during the great depression of the 1930s, as the phonograph and radio broadcasts supplanted sheet music, tin pan alley’s dominance gradually faded away.
broadway refers to the famous street in washington that has become the worldwide leader in stage entertainment.
it was once said that the three things that american culture will be known for are the constitution, baseball and jazz.
jazz originated in black communities in new orleans around the turn of the century.
what has made jazz different from any of the earlier styles, however, was that musicians in a band would sing while playing jazz.
the beatles, a band from liverpool in britain, conquered america and led “the british invasion” in the american popular music.
on december 8, 1980, lennon was assassinated by a demented fan in new york city.
in 2008, the beatles topped billboard magazine's list of the all-time most successful "hot 100" artists”.
pop music is actually a genre of popular music, which derived from rock and roll.
michael jackson was the youngest of the “jackson 5”.
the album bad has earned michael a record-setting eight grammys.
during the early 1960s, the nashville sound turned country music into a multimillion-dollar industry.
michael jackson’s music videos were once fixtures on mtv and brought fame to this relatively new television channel at that time.
michael’s financial collapse forced him to sell many of his considerable assets, including, his lavish neverland ranch.
the word baroque was initially used in ________ as a derogatory term.
pointed arch, alternating high and low sections of a wall are typical ________ characteristics.
the whitehouse in washington d.c belongs to _________.
________ is america’s unique contribution to the world history of architecture.
which of following sentences is correct about frederick c. robie house?
who was appointed court painter to henry viii in the year of 1532?
the oxbow belongs to ________ in america.
marilyn monroe is the work of _________.
there are ______ major periods in the drama of the west.
the classical refers to the drama of ________ where the theater of the western world had its origins.
in 1915, the elegant and grand _________ was opened on broadway.
chinese people celebrate new year's day on unfixed date on february.
the traditional song 'auld lang syne'means looking forward to the new good days.
new year's resolution made on new year's day can always be realized the next year.
one of the activities on christmas for americans is to listen to the queen's speech.
easter's day, meaning the resurrection of jesus christ, is a holiday for christians.
martin luther king jr. is a civil right leader advocating non-violent action as a way to reform discriminatory law in america
presidents’ day emphasize two greatest presidents of the us: george washington and thomas jefferson.
today, you can still see surviving combat veterans from wwi marching on memorial day.
columbus day is especially popular for italian american because christopher columbus who first discovered americas is an italian explorer.
independence day is also called national day.
the first thanksgiving day was celebrated by the pilgrims from europe for a good harvest and extending thanks to the native indians who helped them through the first winter.
may day in england is to welcome the oncoming summer as flower begin to blossom around that time.
the first may day celebration was held in memory of roman goddess of flora.
boxing day is a day before christmas on which the employees will receive the christmas box from their employers.
boxing day is the busiest day for shopping before christmas begins.
in high middle ages, valentine’s day is connected to the courtly love.
valentine’s day is only celebrated by lovers.
april fool’s day is light-hearted and just for entertainment.
eating pumpkin pie is one of the activities to celebrate halloween.
carved pumpkins are used to scare away vampires, according to some superstitious people.
地铁和轻轨的区别是由于他们一个在地上运行，另一个在地下运行。
考虑一下，城市轨道交通系统能正常运营，必须包含哪些系统？
地铁与轻轨交通的特点一般有哪些？
城市轨道交通的发展过程大致经历过哪几个阶段？
轨道交通是城市建设中最大的公益性基础设施，对城市的形成及发展（包括城市规划、cbd、房地产）产生深远的影响。由于轨道交通建设具有 、 ，对轨道交通的规划需要进行充分的可行性研究并完成立项-报批手续。 a 投资大 b 投资小 c 不可恢复性 d 可恢复性
路网规划需要考虑的基本要素包括以下哪些？ a 路网规划必须符合城市的总体规划 b 交通引道城市发展 c 带动城市之间商业一体化 d 促使城市发展走向良性循环
城市轨道交通限界的种类可分为哪几种？ a 车辆限界车辆限界 b 设备限界 c 建筑限界 d 接触轨和接触网限界
影响车站分布的因素有哪些？ a 大型客流集散点 b 城区人口密度 c 线路长度 d 乘客对站间距离的要求
线路的几何设计包括哪些内容？ a 平面设计 b 纵断面设计 c 线路长度设计 d 横断面设计
下列哪些不是影响缓和曲线设置的因素？ a 曲线长度 b 列车重量 c 行车速度 d 曲线半径
下列哪些项不属于直线轨道几何形位基本要素？ a 轨枕材料 b 钢轨质量 c 水平 d 轨底坡
曲线外轨超高与下列哪些因素有关？ a 车辆行驶速度 b 轨距 c 曲线半径 d 列车质量
地铁轨道几何形位控制不严，会造成以下哪些病害？ a 钢轨水平差 b 钢轨三角坑 c 轨道高低不平顺 d 轨枕开裂
（多选题）地铁的供电方式主要有 、 、 等几种形式。 a 柔性架空接触网 b 车内内燃发电机供电 c 接触轨供电 d 刚性架空接触网
（多选题）地铁和轻轨车辆基本构造包括哪些？ a 制动装置 b 走行部 c 车钩缓冲装置 d 车体
（多选题）地铁和轻轨的车体是由 、 、 和车顶等部件组成的封闭筒形结构。 a 侧墙 b 底架 c 端墙 d 心盘
（多选题）车辆摩擦制动系统包含 、 、 等形式。 a 轨道电磁制动 b 闸瓦制动 c 电阻制动 d 盘形制动
（多选题）地铁和轻轨全自动车钩联结状态包含 、 、 等三个状态。 a 试挂 b 待挂 c 解钩 d 连挂
（多选题）按照地铁和轻轨车门的运动轨迹和与车体安装的方式，车门可以大致分为 、 、 和外摆门。 a 外挂门 b 内藏门 c 推拉门 d 塞拉门
（多选题）地铁转向架一般由 、 、轮对轴箱装置和牵引装置等部分组成。 a 车底架 b 构架 c 钢轨导电装置 d弹性悬挂装置
（多选题）为提高车辆运行的平稳性何保证旅客的舒适度，地铁转向架弹簧减振装置由 、 、 和减振器等组成。 a 轴箱装置 b抗侧滚扭杆 c二系悬挂 d一系悬挂
（多选题）城市轨道交通中第三轨供电的缺点和不足包括哪些？ a 带电轨的成本往往比高架电缆高 b 带电轨仅适合安装于半径较大的隧道 c 电流流失 d 集电靴可能全部悬空而无法取电
（多选题）车轮必须制成有斜度的锥形踏面，便于轮对 和 。 a 自动调中 b 提高强度 c 减少车辆发生自激蛇行运动 d 通过曲线
轨道结构的形式有哪几种？
地铁与轻轨钢轮钢轨系统中的轨道系统由哪些结构部件组成？
轨道结构的作用是什么？
钢轨如何按照质量分类？地铁中常见的有哪几种钢轨？
造成地铁钢轨损伤的原因是什么？
无缝线路又称为焊接长钢轨线路，处理焊接长钢轨因温度变化引起的收缩之方法都有哪些？
地铁钢轨轨道的道床都有哪些？
地铁道岔之普通单开道岔由哪几部分组成？
which of the following power electronic devices has the highest switching frequency?
which one does not belong to the advantages of power electronic devices?
wide bandgap semiconductor material is used for making new power electronic switches, which of the following descriptions does not belong to its advantages?
which of the following descriptions does not belong to the advantages of power module?
which of the following descriptions does not belong to the characteristics of ig?
which description is not ture for ordinary thyristor?
which description is ture in normal operation characteristics of thyristor?
the rms value of the secondary side voltage of the transformer is u2. the single-phase bridge controlled rectifier supplies power for resistive load. the maximum forward voltage and reverse voltage that the thyristor can withstand are respectively ( )
when the single-phase bridge controlled rectifier supplies power for large inductive load, its conduction angle q is ( )
in the commutation process of three-phase half wave controlled rectifier, the incorrect description of natural commutation point is ( )
when the load of three-phase half wave controlled rectifier is resistance, the maximum reverse voltage and maximum forward voltage of thyristor are respectively ( )
when the three-phase bridge controlled rectifier is loaded with resistance, what is the correct description of rectifier output voltage ( )
for the three-phase full-bridge controlled rectifier circuit driving an inductive load, the phase shift range of the trigger angle a is ()
for the three-phase full-bridge controlled rectifier circuit corresponding to the waveform shown in the figure below, the trigger angle a of the thyristors is ()
for the three-phase full-bridge controlled rectifier circuit driving a resistive load, the maximum reverse voltage and maximum forward voltage of the thyristors are respectively ()
for the three-phase full-bridge controlled rectifier circuit driving a resistance-inductive load, the maximum reverse voltage and maximum forward voltage of the thyristors are respectively ()
the reason for the commutation voltage drop caused by transformer leakage inductance is ()
the meaning of the displacement factor is ()
the following factors have nothing to do with the determination of the minimum inverter angle ()
which of the following statements is true about the active inverter and the passive inverter?
what is the energy storage element in the dc link of the current source inverter?
in the dc buck chopper circuit, the function of the diode is ()？
which of the following descriptions does not conform with the buck-boost circuit?
which of the following dc choppers output voltage has the opposite polarity to the input voltage?
the characteristics of the single-ended forward circuit are ()?
the characteristics of single-ended flyback circuit are ()?
single phase ac voltage regulating circuit, power supply u1 is power frequency 220v, load parameter is r=0.5ω, l=2mh, and the phase shift range of trigger angle a is（）
the ac power regulation circuit is shown in the figure below. the power supply u1 is power frequency 220 v, and the load resistance r = 10 ω. when the inductance l is 0, the control mode is thyristor turn on 20 power frequency periods, turn off 40 power frequency periods, and the average load power is（）
the main application fields of ac-ac frequency converter are（）