Two years ago, aerospace manufacturer SpaceX ...

Two years ago, aerospace manufacturer SpaceX shocked the world by landing its reusable booster (助推器) engine — the biggest and most costly part of the rocket used to power spacecraft into low orbit — on an autonomous drone ship in the Atlantic Ocean. Now, California-based startup Rocket Lab, has come up with an even more courageous idea: using parachutes and helicopters to capture the returning booster, or first stage as it is often called, in the air!

Rocket Lab’s decision to avoid the propulsive or vertical (垂直的) landing used by SpaceX comes from its business model to keep its Electron rockets small and cost-effective. Standing just 57 feet tall, they are designed to deliver smaller payloads (有效载重) of about 500 pounds for only $5 million a launch. In contrast, the SpaceX Falcon 9 rocket measuring 229 feet tall can lift up to 50,000 pounds, costs about $62 million a mission. “We’re not in the business of building medium-sized launch vehicles but small ones for customers to get on orbit frequently.” said Rocket Lab CEO Peter Beck.

Similar to other rockets, the Electron divides into two once it reaches outer space. While the top part, carrying the load, continues on to its final destination, the booster engine falls back to Earth The company intends to fix a ballute — a parachute-like braking device — to quickly slow down the booster's supersonic speed (超声速) upon its return into the atmosphere. Once it slows down to a reasonable pace, a helicopter will grab the rocket from midair and put it onto an awaiting ship to transport to the company's headquarters. Beck said: “The grand goal here is that if we can capture the vehicle in wonderful condition, in theory, we should be able to put it back on the pad, charge the batteries up, and go again.”

The idea, still in the concept stage, will become one step closer to becoming a reality during Electron’s next launch, scheduled for sometime in 3 years, “Engineers will carefully monitor the first stage as it returns, testing its ability to guide its landing with the best way to slow down its speed,” said Beck.

1.We can infer from the first two paragraphs that ___________.

A.with a height of 229 feet, the Space X Falcon 9 rocket can deliver a load of 50,000 tons

B.small launch vehicles are designed by Rocket Lab to make its boosters economical

C.Space X once successfully captured its rocket before it landed on a ship in the Atlantic Ocean

D.an autonomous drone ship is used by Rocket Lab to transport the first stage

2.What distinguishes the Electron from other rockets?

A.It will be equipped with a ballute to reduce its landing speed.

B.Its booster engine falls back to the earth with the load.

C.It divides into two the instant it enters outer space.

D.It is loaded on a helicopter heading for the company’s headquarters.

3.What will Rocket Lab’s following research focus on?

A.How to capture the booster engine without damaging its function.

B.When to slow down the first stage as it returns.

C.How to cut the cost of each launch mission by calculation.

D.How to make its rockets smaller and more reusable.

4.In which column can you find this article in a piece of newspaper?

A.Books & Art. B.Business.

C.Science Fiction. D.Technology.

高三英语阅读理解困难题查看答案及解析

________China has successfully launched its Shenzhou Ⅵ with two astronauts in it has shocked the world.

A．What　　     B．As

C．It　　       D．That

高三英语单项填空中等难度题查看答案及解析

When did the man go into the People's University?

A.One year ago. B.Two years ago. C.Three years ago.

高三英语短对话简单题查看答案及解析

The Cost of Dishonesty

David began studying in Germany two years ago. The college was a little __ from where he lived, so he had to take the __ every day. This clever student soon found it was easy to __ buying subway tickets, so he often went and returned __ a ticket to save money. As a result, he had been caught with no ticket in the subway four times __ he never took them to __ . He thought what he should pay __ attention to was his study. He did work very hard in the last two years and graduated with __ academic achievements a month ago. Everyone, __ himself, thought he would get a good job easily in __ and had a bright future. He went to a big local company __ . But to his __, he was not even allowed his chance for a/an __ ! He then went to another famous company, only to receive the same __ . When he was __ a third time, he __ help telephoning the company to ask why they didn’t want him. The answer was simple, “We don’t offer jobs to __ people in Germany!”

We may get short-term __ by dishonest means, but the truth will come out __ and the cost is high. So remember, honesty is the best____.

1.A. near　　 B. away　　 C. far　　 D. close

2.A. bus　　 B. car　　 C. vehicle　　 D. subway

3.A. skip　　 B. miss　　 C. flee　　 D. forget

4.A. for　　 B. without　　 C. by　　 D. with

5.A. while　　 B. although　　 C. but　　 D. because

6.A. heart　　 B. mind　　 C. soul　　 D. spirit

7.A. much　　 B. more　　 C. less　　 D. little

8.A. exciting　　 B. depressing　　 C. shocking　　 D. amazing

9.A. regarding　　 B. including　　 C. considering　　 D. concerning

10.A. America　　 B. China　　 C. Germany　　 D. Britain

11.A. confidently　　 B. fortunately　　 C. nervously　　 D. willingly

12.A. surprise　　 B. excitement　　 C. delight　　 D. disappointment

13.A. interview　　 B. exam　　 C. conversation　　 D. meeting

14.A. achievement　　 B. treatment　　 C. argument　　 D. improvement

15.A. turned down　　 B. turned over　　 C. turned up　　 D. turned off

16.A. wouldn’t　　 B. shouldn’t　　 C. couldn’t　　 D. mustn't

17.A. immature　　 B. dissatisfied　　 C. dishonest　　 D. unconfident

18.A. benefits　　 B. impression　　 C. profits　　 D. harm

19.A. on time　　 B. in time　　 C. at times　　 D. in no time

20.A. direction　　 B. advice　　 C. suggestion　　 D. policy

高三英语完形填空中等难度题查看答案及解析

Made In The USA: An Export Boom

In his State of the Union address two years ago, President Obama argued that in order to recover from the economic recession, one of the few things the U．S. needed to do was to export more goods around the world. That night, the president unveiled a new goal: to double U．S. exports over the next five years. It would be an increase that the president said would “support two million jobs in America.”

Most economists dismissed the promise at the time as something unrealistic, but two years later, the U．S. is on pace to meet that goal. American exports are up 34 percent since the president gave that speech, and the number continues to rise.

Competitive In A Global Market

Marlin Steel, a metal working business in Baltimore, makes parts that ship all across the world.“We export to 36 countries，” owner Drew Greenblatt tells All Things Considered Host Guy Raz.“We're working around the clock, and we're growing.”

It's not just advanced manufacturing exports on the rise, but pork, cattle and all kinds of agricultural exports are up as well. Even American craft beer has found an export market.

Flying Dog CEO Jim Caruso says that increasingly, people all over the world are trying the beer from the Maryland－based brewery. Caruso says，“Even in those top beer－producing countries, a competitive American product is finding a market.”

Services Are Exports, Too

Another place exports are coming from is New York City—in particular, the 30^th floor of a Manhattan skyscraper on 5^th Avenue and 52^nd Street. That's where the consulting firm Kurt Solomon lies. It doesn't actually produce a product for export; it provides management advice and strategy.

“Four out of every five Americans is now employed in the service industry，” the nation's top trade official, Ron Kirk says, “Services are a significant part of our exports, and make up about a quarter of our exported goods.” These services can include everything from legal consulting, finance, information technology and even engineering.

And There Are Other Factors

So why has there been an increase of more than 30 percent for exports in almost everything? Part of the increase, at least for the manufacturing side, is due to better technology, says Tyler Cowen, an economist.“A lot of it is being driven by smart machines，” he tells Raz，“The U．S. has high wage rates, which is a disadvantage, but if machines are doing a lot of the work, that doesn't matter.”

China factors a lot in America's export economy, too.“Wages in China have been going up as the country becomes more productive. Thus China is losing the cheap labor advantage it has held for some time.” Cowen says.

Will Jobs Grow, too?

“Companies have become more productive by dismissing workers and lowering costs.”Cowen says.“So I don't view exporting as a way of creating a very large number of jobs, but it will create more profits.”

So not every business or worker is necessarily benefiting from the export boom in the U．S., and Cowen says that could ultimately lead to a polarization(两极) of economic outcomes.

Made In the USA: An Export Boom

高三英语阅读理解困难题查看答案及解析

Made In The USA: An Export Boom

In his State of the Union address two years ago, President Obama argued that in order to recover from the economic recession, one of the few things the U．S. needed to do was to export more goods around the world. That night, the president unveiled a new goal: to double U．S. exports over the next five years. It would be an increase that the president said would “support two million jobs in America.”

Most economists dismissed the promise at the time as something unrealistic, but two years later, the U．S. is on pace to meet that goal. American exports are up 34 percent since the president gave that speech, and the number continues to rise.

Competitive In A Global Market

Marlin Steel, a metal working business in Baltimore, makes parts that ship all across the world. “We export to 36 countries，” owner Drew Greenblatt tells All Things Considered Host Guy Raz. “We're working around the clock, and we're growing.”

It's not just advanced manufacturing exports on the rise, but pork, cattle and all kinds of agricultural exports are up as well. Even American craft beer has found an export market.

Flying Dog CEO Jim Caruso says that increasingly, people all over the world are trying the beer from the Maryland-based brewery. Caruso says，“Even in those top beer-producing countries, a competitive American product is finding a market.”

Services Are Exports, Too

Another place exports are coming from is New York City—in particular, the 30th floor of a Manhattan skyscraper on 5th Avenue and 52nd Street. That's where the consulting firm Kurt Solomon lies. It doesn't actually produce a product for export; it provides management advice and strategy.

“Four out of every five Americans is now employed in the service industry，” the nation's top trade official, Ron Kirk says, “Services are a significant part of our exports, and make up about a quarter of our exported goods.” These services can include everything from legal consulting, finance, information technology and even engineering.

And There Are Other Factors

So why has there been an increase of more than 30 percent for exports in almost everything? Part of the increase, at least for the manufacturing side, is due to better technology, says Tyler Cowen, an economist. “A lot of it is being driven by smart machines，” he tells Raz，“The U．S. has high wage rates, which is a disadvantage, but if machines are doing a lot of the work, that doesn't matter.”

China factors a lot in America's export economy, too. “Wages in China have been going up as the country becomes more productive. Thus China is losing the cheap labor advantage it has held for some time.” Cowen says.

Will Jobs Grow, too?

“Companies have become more productive by dismissing workers and lowering costs.” Cowen says. “So I don't view exporting as a way of creating a very large number of jobs, but it will create more profits.”

So not every business or worker is necessarily benefiting from the export boom in the U．S., and Cowen says that could ultimately lead to a polarization (两极) of economic outcomes.

Made In the USA: An Export Boom

高三英语其他题困难题查看答案及解析

1

Made in the USA: An Export Boom

In his State of the Union address two years ago, President Obama argued that in order to recover from the economic recession, one of the few things the U．S. needed to do was to export more goods around the world. That night, the president unveiled a new goal: to double U．S. exports over the next five years. It would be an increase that the president said would “support two million jobs in America.”

Most economists dismissed the promise at the time as something unrealistic, but two years later, the U．S. is on pace to meet that goal. American exports are up 34 percent since the president gave that speech, and the number continues to rise.

Competitive In A Global Market

Marlin Steel, a metal working business in Baltimore, makes parts that ship all across the world.“ We export to 36 countries，” owner Drew Greenblatt tells All Things Considered Host Guy Raz. “We're working around the clock, and we're growing.”

It's not just advanced manufacturing exports on the rise, but pork, cattle and all kinds of agricultural exports are up as well. Even American craft beer has found an export market.

Flying Dog CEO Jim Caruso says that increasingly, people all over the world are trying the beer from the Maryland-based brewery. Caruso says，“Even in those top beer-producing countries, a competitive American product is finding a market.”

Services Are Exports, Too

Another place exports are coming from is New York City—in particular, the 30^th floor of a Manhattan skyscraper on 5^th Avenue and 52^nd Street. That's where the consulting firm Kurt Solomon lies. It doesn't actually produce a product for export; it provides management advice and strategy.

“Four out of every five Americans is now employed in the service industry，” the nation's top trade official, Ron Kirk says, “Services are a significant part of our exports, and make up about a quarter of our exported goods.” These services can include everything from legal consulting, finance, information technology and even engineering.

And There Are Other Factors

So why has there been an increase of more than 30 percent for exports in almost everything? Part of the increase, at least for the manufacturing side, is due to better technology, says Tyler Cowen, an economist. “A lot of it is being driven by smart machines，” he tells Raz，“The U．S. has high wage rates, which is a disadvantage, but if machines are doing a lot of the work, that doesn't matter.”

China factors a lot in America's export economy, too. “Wages in China have been going up as the country becomes more productive. Thus China is losing the cheap labor advantage it has held for some time.” Cowen says.

Will Jobs Grow, too?

“Companies have become more productive by dismissing workers and lowering costs.” Cowen says, “So I don't view exporting as a way of creating a very large number of jobs, but it will create more profits.”

So not every business or worker is necessarily benefiting from the export boom in the U．S., and Cowen says that could ultimately lead to a polarization(两极) of economic outcomes.

Made In the USA: An Export Boom

高三英语简单题查看答案及解析

Over two weeks ago I was standing on the summit of Mount Qomolangma. It was the top of many years’ hard work, and the___ of a childhood dream.

I have been overwhelmed by the tide of goodwill and　 ___________ . But one thing has become ____ apparent. Many people have constant misunderstandings about Mount Qomolangma. In　　 their ___________, Qomolangma　 has　 ___________ her　 crown.　 She　 has　 become　 a　 mountain synonymous with death, exploitation and_____

The most common question I get asked is: “Is it______ in rubbish?” As a United Nations patron( 资 助 人 ) of the wilderness, one of my roles is to_____ back from the Earth’s remaining wildernesses and to act as a___ for the wild.

I climbed Qomolangma expecting a rubbish dump but what I found　 ___________ me: I　 _______　 saw any litter, from the airport to the summit.

The Nepalese have _______ some huge clean-up campaigns in recent years, perhaps to　　 improve their reputation, but also in response to some tragic natural disasters. The government _______ a number of requirements including that each climber　　 ______________ an additional 8kg of　　 litter (not including their own) and incentives( 激励) for Sherpas( 夏尔巴人) of $2 per kilo of rubbish cleaned.

The results have been ____________. The country lanes of Great Britain have more rubbish than the___ to base camp; despite　 the　 100,000　 footfalls　 I　 saw　 one　 of　 the　 cleanest,　 tidiest wilderness trails I have encountered.

I have spent time in many of the world’s popular wilderness locations and I would say Nepal should be _________ . It is an example of man repairing the ___________　 he has done. As our focus　 turns to the oceans　 and the seemingly_________　 task of repairing our marine habitat,　 we could　　 look at Qomolangma as a fine___ of turning back the clock.

1.A.realization B.motivation C.connection D.schedule

2.A.respond B.protection C.change D.support

3.A.strangely B.naturally C.increasingly D.easily

4.A.symptoms B.minds C.stories D.permits

5.A.lost B.fed C.counted D.saved

6.A.adventure B.pollution C.settlement D.choice

7.A.covered B.seized C.found D.poured

8.A.expect B.appreciate C.apply D.report

9.A.plan B.title C.voice D.lesson

10.A.surprised B.served C.forced D.stressed

11.A.silently B.eagerly C.frankly D.hardly

12.A.challenged B.conducted C.observed D.qualified

13.A.appealed to B.taken in C.depended on D.put forward

14.A.share B.confirm C.remove D.bear

15.A.selective B.familiar C.impressive D.repairable

16.A.reality B.trail C.opportunity D.league

17.A.vital B.proud C.simple D.unique

18.A.conclusion B.convenience C.arrangement D.damage

19.A.impossible B.necessary C.unusual D.extra

20.A.content B.direction C.example D.situation

高三英语完形填空中等难度题查看答案及解析

(2016·天津改编) Two years ago, while Cathy was watching the Olympics, a dream came into her sweet little head — to be a swimmer. Last summer, she wanted to 　　　　　 our local swim team. She practiced hard and finally made it.

A. improve　　　　 B. train　　　　　　 C. join　　　　　　 D. contact

高三英语单项填空中等难度题查看答案及解析

Two years ago, the Funk family of suburban Chicago adopted a Chinese baby girl who had been abandoned on a sidewalk near a Yangzhou textile factory.

Last year and halfway across the United States, the Ramirez family of suburban Miami adopted a girl who had been abandoned a week later on the same spot.

Both families named their daughters Mia. It turns out, a first name and Chinese heritage aren’t the only things the three-year-olds have in common. The girls’ mothers—Holly Funk and Diana Ramirez—met on a website for parents who had gone through international adoptions. After a flurry of e-mails comparing photographs and biographical details, DNA testing proved the families’ suspicions: The girls are probably fraternal (手足般的) twins.

“I was in shock,” said Ramirez, who lives with her husband Carlos in Pembroke Pines, Florida. “Well, now this is for real.”

The Internet and Web groups revolving around international orphanages are increasingly being used to link adopted children with biological kin(亲属). The site that the Funks and Ramirezes used has a membership of 137 people, with 15 sets of twins and seven sets of siblings whose relationships have been confirmed.

At a reunion on Friday at Chicago’s O’Hare International Airport, Mia Diamond Funk Mia Hanying Ramirez shyly surveyed each other, then reached for each other’s hand.

DNA tests established an 85 percent probability that the girls are at least half sisters. Scientists did not have a biological parent to test and reach a greater certainty, but given their ages and physical similarities, experts say it is likely they are fraternal twins.

Douglas and Holly Funk hope to take Mia to Miami in October. Both sets of parents say they are committed to staying in touch and often let the twins talk to each other on the phone.

1.. Both the adopted girls shared a first name ________.

A. because they both came from China

B. because of their physical similarities

C. because their US parents suspected they were twins

D. for no good reason

2. Why did the girls’ mothers meet on the Internet?

A. To compare photographs of the two girls.

B. To communicate with other people who had adopted children abroad.

C. To test their suspicion.

D. To exchange experiences on adopting children.

3.Experts are still not 100 percent sure that the two girls are fraternal twins because ________.

A. DNA tests are still not accurate enough

B. the two girls were born by different parents

C. the DNA of a biological parent is still missing

D. one girl is born a week later than the other

4.What would be the best title for the passage?

A. Adopted Twins Reunited on Internet

B. Adopted Twins Live happily in the US.

C. Suspicion Turned into Reality

D. The Story of Adopted Twins and Their Parents

高三英语阅读理解中等难度题查看答案及解析