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[单选题]

For five miles ________ the road was bordered with apple orchards.

A.end up

B.on end

C.to an end

D.in end

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更多“For five miles ________ the ro…”相关的问题

第1题

完成下列各题 C Nearly five million people see Grand Ca

nyon each year． Most of them see it from their Cars at overlooks along the South Rim．The South Rim is the easiest to reach in the park． The South Rim is open 24 hours a day，365 days a year．Services are provided and facilities(设施)are open year round． A much smaller number of people see the Canyon from the North Rim，which lies just miles directly across the Canyon from the South Rim。The North Rim rises a thousand feet higher than the South Rim．and is more difficult to reach．Heavy snows close the road to the North Rim from late October to mid—May of each year。Even in good weather its harder to get to. The inner canyon includes everything below the rim and is seen mainly by campers，mule(骡子)riders，or river runners．There are many opportunities here for adventurous persons who want to camp, ride a mule to Phantom Ranch，or take a fiver trip though the Canyon on the Colorado River． Visitor services and facilities inside the national park on the Noah Rim are only open from mid-May to late October．Weather permitting，the North Rim is open for day use only，following the close of facilities in late October．During this time there are neither services nor overnight facilities． What do we learn from the passage about the South Rim？

A.It is lower than the Noah Rim．

B.It is hard to get，to even in good weather．

C.It is not open in winter months．

D.It attracts over。five million visitors each year．

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第2题

A new kind of radar has been developed for spaceship travelers. A working laboratory model

of a new system of radar that makes use of a beam of light is said to be ten thousand times more accurate than the best comparable system of radar that used microwaves.

The model has shown that this radar system, known as laser-doppler radar, can measure with absolute precision speeds varying from spaceship orbital injection (进入) velocities (速度) of five miles per second down to virtual stops--speeds of less than one ten thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous (对接) between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could rip open a ship's skin, or a nudge could knock the station out of its orbit.

The light-beam radar, which operates at a frequency of trillions (百万兆) of cycles per second, could easily detect and measure the movement of a vehicle edging up to a satellite space station. A control system using so precise a signal as this would allow a huge vehicle to dock at a space station as lightly as a feather.

Laser-doppler radar ______. ()

A．measures the movements of a spaceship by means of light beam

B．makes use of microwaves

C．makes use of sound waves

D．Both A and B

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第3题

With a tremendous roar from its rocket engine, the satellite is sent up into the sky. Minu

tes later, at an altitude of 300 miles, this tiny electronic moon begins to orbit about the earth. Its radio begins to transmit a staggering amount of information about the satellite's orbital path, the amount of radiation it detects, and the presence of meteorites. Information of all kinds races back to the earth. No human being could possibly copy down all these facts, much less remember and organize them. But an electronic computer can.

The marvel of the machine age, the electronic computer has been in use only since 1946. It can do simple computations—add, subtract, multiply, and divide—with lightning speed and perfect accuracy. It can multiply two 10-digit numbers in 1/1, 000 second, a problem that would take an average person five minutes to do with pencil and paper. Some computers can work 500, 000 times faster than any person can.

Once it is given a program, that is, a carefully worked-out set of instructions devised by a technician trained in computer language, a computer can gather a wide range of information for many purposes. For the scientist it can get information from outer space or from the depths of the ocean. In business and industry the computer prepares factory inventories, keeps track of sales trends and production needs, mails dividend checks, and makes out company payrolls. It can keep bank accounts up to date and make out electric bills. If you are planning a trip by plane, the computer will find out what route to take and what space is available.

Why does the author regard the electronic computer as the marvel of the machine age？

A．Because electronic computers are rare.

B．Because people know little about electronic computers.

C．Because electronic computers can do much more kinds of work that human beings can't.

D．Because electronic computers have been widely suspected.

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第4题

根据以下材料回答第 21～30 题： I can clearly remember the first time I met Mr. Andrews, m

根据以下材料回答第 21～30 题：

I can clearly remember the first time I met Mr. Andrews, my old headmaster, （21） that was over twenty years ago . During the war ,I was at school in the north of England . As soon as it ended, my family returned to London. There were not enough schools left for children to go to and my father had to go from one school to another, asking them to （22） me as a pupil . I used to go with him but he had such a （23） time trying to persuade people even to see him that I seldom had to do any tests. We had been to all the schools near where we lived ,but the more （24） my father argued ,the more it became. In the end ,we went to a school about five miles away from home. The headmaster kept us waiting for （25） an hour. While we were waiting , I （26） around at the school building ,which was one of those old Victorian structures, completely out of date but still standing. I could hear the boys playing in the playground outside when the headmaster’s secretary finally （27） us into his office. Mr. Andrews spoke to me first ,“Why do you want to come here ？” he asked. I had been thinking of saying something about studying but couldn’t （28） remembering the boys outside .“I don’t know anyone in London, ” I said . “I like to play with the other boys. I like to read a lot of books too,” I （29） . “All right ,”Mr. Andrews said . “We have one place （30） ,in face.”

My two years at that school were among the happiest of my life.

第 21 题填入（21）处的最佳答案是（）。

A．if

B．despite

C．although

D．since

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第5题

Patsy Li was discovered ______ miles away from the sunken ship.A．40B．400C．4000D．40000

Patsy Li was discovered ______ miles away from the sunken ship.

A．40

B．400