av中文在线,亚洲日日操,成人在线激情

1742] The high building stand two guards is the police station. [譯文] 門前有兩個衛兵的高大建筑物是公安局. A. in front of which B. in front of it C. that D. which [答案及簡析] A. 定語從句是一個倒裝句.先行詞在從句中充當地點狀語. 【查看更多】

題目列表(包括答案和解析)

閱讀理解

　　Bright comets(彗星) are a rare(罕見的)and beautiful sight. Though we think of them as members of the sun’s family, many comets go far beyond the orbits of the planets. As a rule they return once in a while to travel around the sun

　　A comet seems to be composed of gas, dust and ice. There is a great deal of solid, frozen material. As the mass gets near the sun, the outer frozen parts begin to melt(融化), and more gases form. The pressure of the sun’s radiation(放射) drives the dust and gases outwards in a long, streaming“tail”, perhaps several tails. For this reason the tail always points away from the sun. And when the comet moves farther from the radiation, the tail gets smaller and at last disappears.

　　We owe (把……歸于)our knowledge chiefly to Sir Edmond Harley(1656－1742). He saw a very beautiful one in 1682, and it led him to study comets and their orbits.

　　Then he said,“The comet of 1682 was the same one that appeared in 1531 and again in 1607. It will return in 1758 or 1759.”

　　Harley died in 1742, but people waited and watched…And sure enough, Harley’s Comet arrived, big and bright, early in 1759. The comet was named:“Comet Harley”and it comes about every 75 years.

　　Last time it returned in 1986 and was watched by hundreds of millions of people. If you were one of them, I hope you will be lucky enough to watch it again next time it appears.

1．In what way are comets different from planets?

[　　]

A．They don’t travel round the sun.

B．They are not members of the sun’s family.

C．They are nearer to the sun than planets.

D．They go far beyond the sun than planets.

2．What is the long tail of the comet composed of (由……組成)?

[　　]

A．Gas, dust and ice.

B．Radiation of the sun.

C．Solid, frozen material.

D．Dust and gases.

3．

The reason why the tail of a comet always points away from the sun is that ________.

[　　]

A．it is getting nearer to the sun

B．the dust and gases are driven outward by the pressure

C．its outer frozen parts begin to melt

D．it is moving round the sun

4．Which of the following is right?

[　　]

A．Sure enough, Harley saw the comet arrive early in 1759.

B．Harley’s Comet returned in 1758 as Harley had expected.

C．Seventeen years after Harley’ death the comet returned.

D．We’ll see Comet Harley again in 75 years.

5．When will Comet Harley return next time?

[　　]

A．In 2061.

B．In 2086.

C．In 1759.

D．In 20th century.

查看答案和解析>>

閱讀理解

　　Most people have sometimes though："I should like to fly like a bird．" Many people have tried!We do not know about all the people who have tried to fly but we know about some of them．

　　In about 1020, for example, an Englishman, Oliver, tried to fly with wings like a bird's．He covered more than two hundred meters before he fell to the ground and broke both his arms and legs．But Oliver seemed quite pleased．He said he had made one little mistake．He had forgotten to wear a tail like a bird's．After that he never tried again．

　　In 1507,an Italian, named John Damain, tried to fly in Scotland．He wore a pair of wings made from hens' feathers, and jumped from the walls．He fell like a stone to the ground below and broke a leg．

　　Damain was very disappointed．He said, "I made a mistake．I used hens' feathers and hens do not often fly．I ought to have used the feathers of a bird that flies．Then I am sure I would have flown．" But when he was well again, Damain, like Oliver, never tried once again．

　　An Italian scientist, John Borelli, spent much time thinking about flying．Finally, in 1680, he wrote a book having a great many calculations．They proved that men would never be able to fly with wings strapped to their arms．Borelli worked out that a man's arms were not strong enough to support him in the air．

　　We know now that he was right but some people took no notice of what Borelli said．In 1742, a Frenchman, although he was an old man, tried to fly across the River Seine, in Paris, with wings strapped to his arms．He jumped from a house beside the river and fell down on to a boat below．He was fortunate and only broke a leg．

　　Today men can do much better, though they still cannot fly like birds．They use very light, strong wings called "hang-gliders"．One man landed safely after jumping from a balloon at 32,700 feet!Another stayed in the air for 19 hours 36 minutes!They still sometimes hurt themselves．

(1)

This passage tells about ________．
[　　]
A．	all the people in the world who have tried to fly
B．	some of the people who have tried to fly
C．	how men can fly like a bird
D．	how to use wings like a bird

(2)

Oliver seemed quite pleased because ________．
[　　]
A．	he tried to fly and covered more than 200 meters
B．	he fell to the ground
C．	he broke both his arms and legs
D．	he wore a tail like a bird's

(3)

Both Darnain and Oliver ________．
[　　]
A．	made a terrible mistake
B．	tried to fly with wings and tails
C．	wore a pair of wings made of hens' feather
D．	tried to fly but failed

(4)

Which of the following statements is TURE?
[　　]
A．	Today men can fly with wings．
B．	Today men have stopped trying to fly．
C．	Today men have made great progress in flying．
D．	Today men don't hurt themselves any more while flying．

查看答案和解析>>

閱讀理解

　　Thermometers are very useful tools．We use them to measure our temperature when we are sick, We use them to measure the temperature of the air．We also put them into the roast to see if it has finished cooking．Knowing how to read a thermometer can be very helpful．

　　A thermometer is made of a hollow tube with a bulb at the end filled with mercury．When the mercury gets hot it expands and moves up the tube; when the mercury mols down it contracts and moves down the tube．

　　In 1714 a famous German scientist named Gabriel Daniel Fahrenheit marked where the mercury was in the tube when the thermometer was in a mixture of salt and snow．He called this point 0 degrees(0°)．Then he marked the mercury height when the thermometer was in a man’s mouth．He then drew equally spaced marks between the two points．On this scale the temperature of ice that is about to melt is 32℉, and the temperature of water that has just begun to boil is 212℉．The F sthnds for Fahrenheit．

　　In 1742 a Swedish scientist, Celsius, made a different scale．He marked 0°as the freezing point of water and 100°as the boiling point, with 100 points between the two．This is the Centigrade scale, which we write as 42℃, for example．We use the Fahrenheit scale for weather, cooking and medicine; but in science we always use the Centigrade scale．

　　Here are some thermometers, with the mercury levels marked, and the temperatures given：

(1)

According to the piclure above, what is correct temperature in the following picture?
[　　]
A．	175; 65．
B．	170; 60．
C．	180; 70．
D．	185; 75

(2)

What may be the main idea of the passage?
[　　]
A．	Fahrenheit made the first thermometer．
B．	You need a thermometer by looking at the level of the mercury．
C．	Centigrade thermometers are better than Fahrenheit ones．
D．	Thermometers are the same all over the world．

(3)

In order for thermometers to be useful, they must ________．
[　　]
A．	all be the same lagth
B．	all have degrees of some sort marked on them
C．	all be made of clear blue glass
D．	all be Fahrenheit

(4)

What does the underlined word “mercury” mean?
[　　]
A．	蒸餾水
B．	紅藥水
C．	水銀
D．	重水

查看答案和解析>>

　　　 Below you’ll find the most popular travel and vacation destinations in the US.

Times Square, New York City

　　　 This Manhattan crossroads of commerce(商業) is the top spot on our list, thanks to increasing visitors to New York City in 2012 despite the economic turndown. According to the Times Square Alliance, “80% of visitors to NYC make it a point to visit Times Square.” The total of NYC visits last year was 47 million, which means about 37.6 million travelers visited the “Crossroads of the World”.

The Las Vegas Strip, Nevada

　　　 The Strip is part of the federal government’s National Scenic Byways Program, which designs roads based on “archeological, cultural, historic, natural, recreational and scenic qualities”. Last year, total visitors to Las Vegas numbered 37.5 million; the Las Vegas Convention and Visitors Authority found that an average of 80% of visitors had either stayed overnight or gambled(賭博) on the Strip.

National Mall and Memorial Parks, Washington, D.C.

　　　 Many of the nation’s iconic(圖標的) public landmarks are found in the 1,000-plus acres of the National Mall and Memorial Parks, including the Washington, Lincoln, and Jefferson Memorials, and the Korean and Vietnam War Veterans Memorials. The Smithsonian Institution’s 19 museums are also close to the Mall; last year, the network of free museums drew more than 25 million visitors.

Faneuil Hall Marketplace, Boston

　　　 Built in 1742 by Peter Faneuil, a wealthy Boston merchant, Faneuil Hall has served as a commercial centre of the city for centuries and as a site for famous public speeches, like Samuel Adams’ independence-rallying speech to colonists. Today, shoppers account for a large share of visitors. Faneuil Hall’s historical significance makes it gain the status of cultural attraction, attracting 20 million visitors every year.

68. How many people visited the Las Vegas Strip last year?

A. 47 million.　　　　　 B. 37.5 million.　　　　　　　　　　 C. 30 million.　　　　　　　 D. 25 million.

69. If you want to listen to some famous public speeches, the best place for you to go is _________.

A. Times Square, New York City　　　　　　　　　　　　

B. The Las Vegas Strip, Nevada

C. Faneuil Hall Marketplace, Boston　　　　　　　　　

D. National Mall and Memorial Parks, Washington, D.C.

70. We can learn from the passage that _________.

A. Times Square has historical significance

B. Faneuil Hall Marketplace is the cultural centre of NYC

C. Faneuil Hall Marketplace is named after a famous speaker

D. people can visit the Smithsonian Institution’s museums free of charge

71. The four tourist destinations in the passage are listed in order of their _________.

A. size B. popularity C. history D. importance

查看答案和解析>>

同步練習冊答案

日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

練習冊

高中

初中

小學