欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

相關(guān)習(xí)題
 0  54532  54540  54546  54550  54556  54558  54562  54568  54570  54576  54582  54586  54588  54592  54598  54600  54606  54610  54612  54616  54618  54622  54624  54626  54627  54628  54630  54631  54632  54634  54636  54640  54642  54646  54648  54652  54658  54660  54666  54670  54672  54676  54682  54688  54690  54696  54700  54702  54708  54712  54718  54726  151629 

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題10 特殊句式與主謂一致英語試卷(解析版) 題型:閱讀理解

Why do human beings still risk their lives under ground and doing one of the dirtiest and most dangerous jobs in the world?It’s an increasingly urgent question,given the recent high?profile(引人注目的) mining accidents in SagoW.Va.and Huntington,Utah.A small group of engineers and robotics experts look forward to a day in the not?too?distant future when robots and other technology do most of the dangerous mining work.

Robotic technology,in particularholds much promise,McAteer says,especially when it comes to mapping mines and rescuing trapped miners—the special operations of the mining industry.

One of the first mining robots was developed five years ago at Carnegie?Mellon University’s Robotics Institute.It was called Groundhog and it looked like a golf cart.It used lasers(激光器) to “see” in dark tunnels and map abandoned mines—some of the most dangerous work in the business.

The latest design is called Cave Crawler.It’s a bit smaller than Groundhogand even more advanced.It can take photos and video and has sensors mounted(增加) that can detect the presence of dangerous gases.Incredibly,the robot has a real sense of logic.If it comes across an obstacle it gets confused.It has to think through the process and where to go next,and sometimes it throws_a_fit just like a real person.

The biggest obstacle,though,is cost.The original research project was federally funded,but that money has dried up,and it’s not clear where future funding will come from. Partly for that reason,and partly because of advances in safety,mining is not nearly as dangerous as it was in the past.Since 1990,fatalities(致命性) have declined by 67 percent and injuries by 51 percent,according to the National Mining Association.

Some experts predict that robots in mines will serve much of the same function that they do in the automotive industry.The robots do the most repetitive and dangerous jobs,but don’t eliminate(消除) the need for human workers.

1.The underlined phrase “throws a fit” in Paragraph 4 probably means “________”

Agets angry? Bgets sick

Cbecomes hungry? Dbecomes cheerful

2.We can infer from the last paragraph that ________.

Arobots in mines will serve much in the automotive industry

Bthere will be no need for human workers in mines

Cthe mine robots will have a very bright future

Drobots in mines have a long way to go

3.Which of the following is TRUE according to the text?

AMining robots do most of the mining work at present.

BGroundhog can discover the presence of dangerous gases.

CExperts are trying to make robots save miners in danger.

DRobots cannot do dangerous work in dark areas.

4.What can be the best title for the text?

AMining Accidents in America

BCould Robots Replace Humans in Mines?

CCave Crawlerthe Latest Robot

DThe Development of Robots

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題10 特殊句式與主謂一致英語試卷(解析版) 題型:閱讀理解

President Abraham Lincoln’s first call for volunteers to fight in the Civil War was for whites only.The Civil War was a white man’s war,northern whites insisted.Its purpose was to preserve the Union.It was not being fought to end slavery.But by September of 1862,the sentiment toward black volunteers had changed.Lincoln had hoped that the war would be short,but it had already lasted for a year and a half.Union manpower had fallen dangerously.

Lincoln had a plan.He issued the Emancipation Proclamation.It stated that as of January 1,1863all slaves living in the rebellious southern states would be forever free.And starting immediately,Union armies would accept black volunteers.

The southern rebels’response to Lincoln’s call for black troops was a deadly one.Captives (俘虜) of any Union regiment () with black troops were to be given “no quarter”They were to be put to death immediately.

African?American troops throughout the war distinguished themselves (表現(xiàn)突出) in battle at places like Milliken’s Bend,Fort Wagnerand the Crater at St.Petersburg.As to their conduct on the battlefield,Colonel Thomas Wentworth Higginson wrote,“Nobody knows anything about these men who has not seen them in battle.No officer in this regiment now doubts that the successful process of the war lies in the unlimited employment of black troops.” By the war’s end,186,000 black men had participated.They made up nearly 10 percent of Union forces.These black soldiers saw action in more than 250 battles.Black soldiers also gave their lives.By the war’s end,about 38,000 black soldiers had died.They died from disease,in battleand after capture by rebel troops.

1. This passage is mainly about________.

Acause of the Civil War

Bthe Emancipation Proclamation

Cblack soldiers in the Civil War

Dwhy Lincoln was a good president

2. What does the underlined word “sentiment” in the first paragraph mean?

AWhites.

BPeople who keep watch.

CRebels.

DThought and feeling.

3.What can we conclude from the passage?

ALincoln acted too late to free the slaves.

BBlacks fought well for the Union cause.

CThe Civil War changed American history.

DThe southern rebels nearly won the Civil War.

4. Which of the following is TRUE according to the passage?

AThe Civil War’s purpose was to drive the black away.

BThe Civil War ended just in one year with the help of the blacks.

CAll slaves were set free by September of 1862.

DBlack captives of any Union regiment were killed after Lincoln’s call.

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

Before you pay a visit to a place of interest,look in your local library________a book about it.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2013·安徽,22)

Aon? Bat

Cfor? Dto

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

I am always delighted when I receive an e?mail from you.________the party on July 1st,I shall be pleased to attend.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2013·江蘇,26)

AOn account of? BIn response to

CIn view of? DWith regard to

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

An artist who was recently traveling on a ferry to the southern island discovered________a long lost antique Greek vase.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2013·湖北,30)

Aat random? Bby chance

Cin turn? Don occasion

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

The manager wants to see changes in the companyand I am sure he will ________.

(2013·陜西,24)

Ain particular? Bin turn

Cin charge? Din time

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

A serious study of physics is impossible________some knowledge of mathematics.

(2013·大綱全國,31)

Aagainst? Bbefore

Cbeyond? Dwithout

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

I have an appointment ________ Dr.Smith,but I need to change it.(2013·北京,26)

Ato? Boff

Cwith? Dfrom

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

________everyone? hereI wish you a pleasant journey back to your country.(2013·遼寧,25)

ABy means of BOn behalf of

CIn search of? DFor fear of

 

查看答案和解析>>

科目: 來源:2013-2014學(xué)年高考二輪復(fù)習(xí)訓(xùn)練:專題11 介詞與介詞短語英語試卷(解析版) 題型:單項填空

Mrs.Smith finds it hard to clear up the messas her children are always ________ whenever she tries to.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2013·福建,29)

Ain the way? Bon watch

Cin sight? Don the line

 

查看答案和解析>>

同步練習(xí)冊答案