4.Terrafugia Inc.said Monday that its new flying car has completed its first flight,bringing the company closer to its goal of selling the flying car within the next year.The vehicle-named the Transition-has two seats,four wheels and wings that fold up so it can be driven like a car.The Transition,which flew at 1,400 feet for eight minutes last month,can reach around 70 miles per hour on the road and 115 in the air.It flies using a 23-gallon tank of gas and burns 5 gallons per hour in the air.On the ground,it gets 35 miles per gallon.
      Around 100 people have already put down a﹩10,000 deposit to get a Transition when they go on sale,and those numbers will likely rise after Terrafugia introduces the Transition to the public later this week at the New York Auto Show.But don't  expect it to show up in too many driveways.It's expected to cost﹩279,000.And it won't  help if you're stuck in traffic.The car needs a runway.
      Inventors have been trying to make flying cars since the 1930s,according to Robert Mann,an airline industry expert.But Mann thinks Terrafugia has come closer than anyone to making the flying car a reality.The government has already permitted the company to use special materials to make it easier for the vehicle to fly.The Transition  is now going through crash tests to make sure it meets federal safety standards.
      Mann said Terrafugia was helped by the Federal Aviation Administration's decision five years ago to create a separate set of standards for light sport aircraft,which are lower than those for pilots of larger planes.Terrafugia says an owner would need to pass a test and complete 20 hours of flying time to be able to fly the Transition,a requirement pilots would find relatively easy to meet.
 
28.What is the first paragraph mainly about?A
A.The basic data of the Transition.
B.The advantages of flying cars.
C.The potential market for flying cars.
C.The designers of the Transition.
29.Why is the Transition unlikely to show up in too many driveways?C
A.It causes traffic jams.
B.It is difficult to operate.
C.It is very expensive.
D.It burns too much fuel.
30.What is the government's attitude to the development of the flying car?B
A.Cautious.
B.Favorable.
C.Ambiguous.
D.Disapproving.
31.What is the best title for the text?D
A.Flying Car at Auto Show          B.The Transition's First Flight
C.Pilots'Dream Coming True         D.Flying Car Closer to Reality.
1.Ho Khanh is a middle-aged farmer,living in a village on the edge of Phong-Nha-Ke Bang National Park in Vietnam.What is special about him is that he has discovered Son Doong,the largest cave in the world.
"I first found the cave more than twenty years ago,in 1991,"he says."I was out collecting firewood near the national park.My family were very poor,so I decided to go deeper into the forest to find some aloe (芦荟),which is very valuable.Not many people went that far into the forest because they were afraid of the wild animals."
Soon Khanh lost his way."I sat down with my back to a huge round rock,"he says."Then I heard the sound of a strong wind and running water coming from behind me."He found the entrance to a huge cave,with a wide river coming out of it.Khanh thought he was walking into a great cave.With no ropes or lights,he did not go further into it.
Khanh's story spread like wildfire,but not everyone believed him."I wanted to prove that I was telling the truth,but I couldn't remember the way to the cave."Then one morning early in the winter of 2006,a group of cavers from Britain came to ask Khanh for help,as they had heard about his discovery fifteen years before.
Khanh agreed to help the team to find the cave,but after three days in the jungle (丛林),they lost their way."I just couldn't remember where it was,"he says.The team came back twice,but each time they were beaten by the thick jungle.Finally the cavers left.
In 2009,Khanh headed to the jungle one cold winter's morning."I stopped by a big round rock,"he says."There was the same strong wind,the sound of water running----I knew I'd found the cave at last."Soon the British cavers returned and followed Khanh on a six-hour trip deep into the jungle.On April 14they found Son Doong.

4.How did Khanh discover Son Doong?A
A.By accident completely.
B.By following wild animals.
C.Through ropes and lights.
D.With the help of British cavers.
5.How long did it take Khanh to prove he discovered Son Doong?C
A.About three years.
B.About fifteen years.
C.About eighteen years.
D.About twenty years.
6.What did the British cavers think of Khanh's story?B
A.Doubtful.          B.Reliable.
C.False.             D.Ridiculous.
7.It can be inferred from the passage thatC.
A.there is little water in the Son Doong
B.there is a lot of aloe in Son Doong
C.there is a huge rock at the entrance to Son Doong
D.there is the largest national park near Son Doong.
8.Americans waste energy every year,from electronics using too much power,uneaten foods and many other preventable causes.(16)F And it will make you feel good to know you are helping to make the earth a better place for the future.
In the Kitchen
You can easily save energy in the kitchen by changing the way you use appliance.First,the dishwashers.Forget the"Dry Cycle".Open the dishwasher door and allow dishes to air dry.(17)D
In the Bathroom
You may love your hot shower,but it is no good for the environment.Try taking baths instead of showers to conserve(节省) water.Turn off the tap while you are brushing the teeth,washing your face,or shaving in order to keep from wasting the water.(18)G
In the Garden
Green living has no better place than in a green garden.Instead of wasting your lawn with water you pay for,buy a rain barrel to gather the natural falling rain water.(19)B Composting (堆肥) will break down leftover vegetables and paper products and turn them into a usable,rich soil (土壤).The soil will come in handy when you start growing your own vegetables.
At the Office
Green living does not have to stop when you go to work.Change your usual work routine by walking,riding your bike or taking public transportation to the workplace.(20)E Save paper by printing on both sides of each page.
A.A vegetable garden saves your money.
B.You can also save money by building a compost area.
C.Transporting vegetables to the local grocery store requires much gas.
D.In the same way,open the door to your oven to allow heat to warm the room.
E.While at work,cut down waste by bringing your own cup for coffee or water.
F.Starting green living techniques into your home will help the environment.
G.If you are decorate your bathroom,set up a special flush toilet to conserve water when flushing.
5.Modern zoos are different from those built fifty years ago.Those zoos were places where people could go to see animals from many parts of the world.The animals lived in cages with iron bars.Although the zoo keepers took good care of them,many of the animals did not feel comfortable,and they often felt ill.
In modern zoos,people can see animals in more natural conditions.The animals are given more freedom in nature.Even the appearance of zoos has changed.Trees and grass grow in cages,and water flows through the places the animal live in.There are few bars; instead,there is often a deep ditch,filled with water,which surrounds a space where several sorts of animals live together as they world naturally.In an American zoo,the visitor can walk through a huge special cage that is filled with trees,some small animals and many birds,and large enough for birds to live naturally.In a zoo in New York,with the use of special light,people can observe certain animals that are active only at night,when most zoos are closed.Some zoos have special places for visitors to watch animals that live in the desert or under water.
Modern zoos not only show animals to visitors,but also keep and save rare animals.For this reason,fifty years from now,the grandchildren of today's visitors will still be able to enjoy watching these animals

32.It seems thatD is something most important for animals.
A.eating good food                B.living in cages
C.living with other animals           D.living in natural conditions
33.In modern zoosC.
A.different kinds of animals are kept separately
B.animals are no longer taken good care of
C.animals have more freedom
D.visitors can walk where they live
34.In some zoos people canB.
A.walk through huge special cages to watch all sots of animals
B.see animals which live in special conditions
C.during the day observe animals that are active at night
D.watch all rare animals that may not be seen in the future
35.The main idea of the passage is thatA.
A.zoos are now places where animals can live naturally
B.zoos are places where people can see animals from all over the world
C.there should be old and modern zoos alike
D.rare animals may soon die out.

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