A quick look at an e-reader
New, High-Contrast（高对比度） E-Ink Screen
50% better contrast than any other e-reader. The clearest text and sharpest images.
Read in Bright Sunlight
Unlike LCD screens, its screen reads like real paper, with no glare. Read as easily in bright sunlight as in your living room.
Lighter Than a Paperback
Weighing only 8.5 ounces and 1/3 of an inch thick, it is lighter than a paperback and thinner than a magazine.
Holds 3,500 Books
We doubled its storage so you can carry up to 3,500 books.
Battery Life of Up to One Month
A single charge lasts up to one month with wireless off. Keeping wireless always on, it can go for up to three weeks without recharging.  
Books in 60 Seconds
With fast, free wireless delivery, you can start reading books in less than 60 seconds. No computer required.
______
Over 670,000 books, including 107 of 111 New York Times Best Sellers, plus audiobooks, periodicals and blogs. For non-U.S. customers, content availability varies.
Free, Out-of-Copyright Books
Over 1.8 million free, out-of-copyright, pre-1923 books are available such as Pride and Prejudice.
Low Book Prices
Over 550,000 books are $9.99 or less, including 73 New York Times Best Sellers of the present time.
Free Book Samples (样品)
Download and read first chapters for free before you decide to buy.
【小题1】If you want to use the e-reader longer, you should ______.

A quick look at an e-reader

New, High-Contrast（高对比度） E-Ink Screen

50% better contrast than any other e-reader. The clearest text and sharpest images.

Read in Bright Sunlight

Unlike LCD screens, its screen reads like real paper, with no glare. Read as easily in bright sunlight as in your living room.

Lighter Than a Paperback

Weighing only 8.5 ounces and 1/3 of an inch thick, it is lighter than a paperback and thinner than a magazine.

Holds 3,500 Books

We doubled its storage so you can carry up to 3,500 books.

Battery Life of Up to One Month

A single charge lasts up to one month with wireless off. Keeping wireless always on, it can go for up to three weeks without recharging.  

Books in 60 Seconds

With fast, free wireless delivery, you can start reading books in less than 60 seconds. No computer required.

______

Over 670,000 books, including 107 of 111 New York Times Best Sellers, plus audiobooks, periodicals and blogs. For non-U.S. customers, content availability varies.

Free, Out-of-Copyright Books

Over 1.8 million free, out-of-copyright, pre-1923 books are available such as Pride and Prejudice.

Low Book Prices

Over 550,000 books are $9.99 or less, including 73 New York Times Best Sellers of the present time.

Free Book Samples (样品)

Download and read first chapters for free before you decide to buy.

1.If you want to use the e-reader longer, you should ______.

    A. charge it frequently          B. keep wireless off

    C. use it in bright sunlight     D. read in a quiet room

2.Which of the following can best fill in the blank in the text?

    A. Large selection.     B.Excellent service.

C. Reasonable prices.   D.Interesting content.

3.What is this text，mainly about?

A.What an e-reader is.

B.Who needs an e-reader.

C.How to use an e-reader.

D.The advantages of an e-reader.

—Which type of car do you like better?

    — ______．They are both expensive and high emission（高排量）．

  A．None                                  B．Either                            C．Neither                         D．Both

C

    The French submarine is called Le Triomphant, meaning“the winner”．The name of the British submarine is Vanguard，meaning“the leading position in an army”．It’s clear from the submarines’names that they were made for victory．  

    However，it was an accident，rather than a victory，that led these two submarines to recently make news headlines across the world．

    On February 16，Britain and France admitted that two of their nuclear—armed submarines，HMS Vanguard and Le Triomphant，collided while deep in the Atlantic in early February．Both submarines were on secret patrols(巡逻)and carrying nuclear arms when they collided．

    Le Triomphant had no idea that it had run into HMS Vanguard until several days later．The French navy at first believed that Le Triomphant had hit an“object，probably a container(集装箱)”．

    Investigations have begun to work out how such a collision could have happened．Both submarines are equipped with state-of～the—art(最先进的)technology that is supposed to find other submarines．Yet，neither submarine saw the other until it was too late．

    One idea being considered was that their anti-sonar(抗声纳)equipment，which hides submarines，was just too effective in hiding one from the other．  

    Submarines use sonar to sense what is in the sea near them．Sonar is a submarine’s ear．Many sea animals use sonar as well．Dolphins produce high-pitched(声调高的)clicks．when these clicks hit an object，some of the sound will echo(发出回声)back to the“sender”．By listening to the echo and working out the time it took before the echo came back，the dolphin can work out how far away the object is．

    There are two kinds of sonar：active sonar，which sends out signals，and passive sonar，which listens for signals with extremely sensitive microphones．

The two submarines were designed to be very quiet and as hidden as possible．because a submarine’s job description(工作职责)is not to be found．Many modern submarines do not use active sonar，only passive sonar．This makes it very difficult for a submarine to“hear”if another submarine is near．  

    Britain’s Ministry of Defense(国防部) has said the collision did not lead to any radioactive leaks(放射物泄漏)．The chance of a full nuclear explosion was almost impossible．However，experts say that if the walls of the submarines had broken，or a fire had been started，there could have been a major disaster．

    A senior British Navy source told The Sun newspaper that the possible consequences of such a collision were“unthinkable”．

    “It’s very unlikely there would have been a nuclear explosion．But a radioactive leak was a possibilitv．That would have been a national disaster．”he said．

64、What has made HMS Vanguard and Le Triomphant well known recently?  

  A、l heir names carried very positive meanings．．

  B、They collided in the Atlantic this February．

  C、They are both equipped with advanced technology．

  D、They are both nuclear—armed submarines．

65、What’s the probable reason for the accident?

  A、The two submarines were moving at a high speed．

  B、Their anti—sonar equipment was too effective．

  C、They were not equipped with active sonar．．

  D、The submarines were designed to be too quiet．  

66、Which of the following is the right order in which the dolphin senses the object’s position?

   a、The sound hitting the object．

   b、Producing high—pitched sound．

   c、The sound echoing back．

   d、Working out the time to come back．

   e、Receiving the sound．

  A、b一a—c—d—e   B、d—a—e—c—b   C、b—c—d—a—e   D、b—a—c—e—d

67、Which of the following is NOT true about the passage?  

A、Both of the submarines carried nuclear arms when they collided．

B、Many modern submarines do not use passive sonar so as to be as hidden as possible．

C、The collision may have caused a disaster if a fire had been started．

D、There would have been a nuclear explosion if the two submarines had collided harder． 

    The French submarine is called Le Triomphant, meaning“the winner”．The name of the British submarine is Vanguard，meaning“the leading position in an army”．It’s clear from the submarines’names that they were made for victory．  

    However，it was an accident，rather than a victory，that led these two submarines to recently make news headlines across the world．

    On February 16，Britain and France admitted that two of their nuclear—armed submarines，HMS Vanguard and Le Triomphant，collided while deep in the Atlantic in early February．Both submarines were on secret patrols(巡逻)and carrying nuclear arms when they collided．

    Le Triomphant had no idea that it had run into HMS Vanguard until several days later．The French navy at first believed that Le Triomphant had hit an“object，probably a container(集装箱)”．

    Investigations have begun to work out how such a collision could have happened．Both submarines are equipped with state-of～the—art(最先进的)technology that is supposed to find other submarines．Yet，neither submarine saw the other until it was too late．

    One idea being considered was that their anti-sonar(抗声纳)equipment，which hides submarines，was just too effective in hiding one from the other．  

    Submarines use sonar to sense what is in the sea near them．Sonar is a submarine’s ear．Many sea animals use sonar as well．Dolphins produce high-pitched(声调高的)clicks．when these clicks hit an object，some of the sound will echo(发出回声)back to the“sender”．By listening to the echo and working out the time it took before the echo came back，the dolphin can work out how far away the object is．

    There are two kinds of sonar：active sonar，which sends out signals，and passive sonar，which listens for signals with extremely sensitive microphones．

The two submarines were designed to be very quiet and as hidden as possible．because a submarine’s job description(工作职责)is not to be found．Many modern submarines do not use active sonar，only passive sonar．This makes it very difficult for a submarine to“hear”if another submarine is near．  

    Britain’s Ministry of Defense(国防部) has said the collision did not lead to any radioactive leaks(放射物泄漏)．The chance of a full nuclear explosion was almost impossible．However，experts say that if the walls of the submarines had broken，or a fire had been started，there could have been a major disaster．

    A senior British Navy source told The Sun newspaper that the possible consequences of such a collision were“unthinkable”．

    “It’s very unlikely there would have been a nuclear explosion．But a radioactive leak was a possibilitv．That would have been a national disaster．”he said．

1.What has made HMS Vanguard and Le Triomphant well known recently?  

  A、l heir names carried very positive meanings．．

  B、They collided in the Atlantic this February．

  C、They are both equipped with advanced technology．

  D、They are both nuclear—armed submarines．

2.What’s the probable reason for the accident?

  A、The two submarines were moving at a high speed．

  B、Their anti—sonar equipment was too effective．

  C、They were not equipped with active sonar．．

  D、The submarines were designed to be too quiet．  

3.Which of the following is the right order in which the dolphin senses the object’s position?

   a、The sound hitting the object．

   b、Producing high—pitched sound．

   c、The sound echoing back．

   d、Working out the time to come back．

   e、Receiving the sound．

  A、b一a—c—d—e   B、d—a—e—c—b   C、b—c—d—a—e   D、b—a—c—e—d

4.Which of the following is NOT true about the passage?  

A、Both of the submarines carried nuclear arms when they collided．

B、Many modern submarines do not use passive sonar so as to be as hidden as possible．

C、The collision may have caused a disaster if a fire had been started．

D、There would have been a nuclear explosion if the two submarines had collided harder．