That flying school graduates a hundred every year. 题目和参考答案——青夏教育精英家教网—

句型转换

Children find that flying model planes is great fun．

Children find ________ great fun ________ fly model planes．

The way we get about has a deep influence on the way we live－affecting where we set up home, work and holiday. So what changes might come in the way we get around? What big ideas are out there, and do they have any chance of coming true?

Personal Air Travel

The idea: flying cars

Developments in light small plane technology will make it possible for everyone to own what are, in fact, flying cars. They will have closed cabins, heating, stereos and room for two people.

You will take off from a field near your home and fly to towns and cities. After landing, you will take off the fixed wing and continue your journey by road just as if you were traveling by car.

Fuel efficient engines and the advantage of being able to travel in the sky will keep costs and the environmental influence down.

Flying for Fun

The idea: Jet Packs

The idea was a hit when a stuntman (特技演员) flew around on one during the opening ceremony of the 1984 Los Angeles Olympics, which was very successful.

You’ll be able to use the equipment－roughly the size of two scuba tanks fastened to your back－for short journeys.

They will be handy for cleaning hard-to-reach windows, arriving in style at a party and shopping.

Taxis

The idea: driverless taxis

These computer-controlled taxis will take you wherever you want along a fixed route, whenever you want to go.

For the price of one person’s bus fare, several people can ride at speeds of up to 25 mph, and there will be fences to guard against accidents.

There will be little, if any, wait for the use of the taxis, which will leave from stations and will be used by prepaid cards.

The taxis, which will travel on a 1.5 m-wide track, will use 75% less energy per passenger than a car and 50% less than a bus.

1.The passage is mainly about ________.

A. future travel B. big ideas and dreams

C. advanced technology D. the influence of travel

2.We learn from the passage that flying cars ________.

A. will operate only in the sky

B. will be more expensive than common cars

C. will have few bad effects on the environment

D. won’t be equipped with things similar to what cars have

3. With Jet Packs, we can do all the following EXCEPT ________.

A. attend a party B. clean high windows

C. go shopping D. have a long journey

4.As for driverless taxis, we can infer that ________.

A. we can go wherever we want in them

B. they will be both convenient and safe

C. it costs more to take them than to take ordinary cars

D. they will be operated by computers as well as by people

Flying squirrels are a family of 44 species of squirrels．The term "flying" is somewhat of an incorrect name．

Flying squirrels are not capable of powered flight like birds or bats; instead, they glide （=move smoothly and quietly） between trees．They are capable of obtaining lift within the course of these flights, with flights recorded to 90 meters （295 ft）．The direction and speed of the animal in midair is varied by changing the positions of its two arms and legs, largely controlled by small soft wrist bones． This changes the tightness of the paganism（翼膜）,a very thin furry parachute-like skin that stretches from wrist to ankle．It has a hairy tail that keeps its flight steady and unchanging．The tail acts as an assistant airfoil （螺旋桨），working as an air brake before landing on a tree trunk．

Flying squirrels, are gliding mammals （哺乳动物）. A few mammals can glide through the trees, but they do not actually fly （like birds and bats）．They have a very soft and thin skin on either side of

their body．

The Siberian Flying Squirrel ranges from the Baltic Sea in the west to the Pacific Ocean in the east．Before the 21st century, the evolutionary （进化） history of the flying squirrel was frequently argued about．This debate became clearer and clearer as a result of two recent scientific studies．These studies found support that flying squirrels originated 18-20 million years ago have a twin relationship with tree squirrels．

69．How does the flying squirrel control its flying speed?

A．By moving its tail．

B．By changing the positions of its arms and legs．

C．By blowing the air．

D．By moving its soft thin skin on either side of the body．

70．_______ can help the flying squirrel stop gliding and land．

A．A tree trunk B．Its bones in the body

C．Its tail D．Its wrists

71．According to this article, all the following statements are true except that _______．

A．flying squirrels and birds are of a kind because both of them can fly

B．millions of years ago, flying squirrels were sisters and brothers of tree squirrels

C．flying squirrels can glide instead of flying

D．flying squirrels give birth to babies rather than lay eggs

72．Which category does the text most probably belong to?

A．Agriculture and Food． B．Health and Medicine．

C．Plants and Animals． D．Science and Technology．