If a man in a spaceship looked down at the earth, he would see mainly water. He might think that the earth was one giant ocean with little land.

  Nearly seven-tenths of the earth's surface is covered by water. One ocean, the Pacific (太平洋), has an area of 63 million square miles.

  Many years ago people thought that the land under all this water was flat. Now they know that this is not true. There are as many mountains under the sea as there are on the land.

At first, there was very little salt in the sea. The salt was brought into the, sea by rivers. It is possible to measure the age of the earth by measuring the amount of salt in the sea. Scientists can calculate how many years it took for this amount of salt to be carried from the land into the sea.

(1)Nearly ____of the earth's surface is covered by water.

[  ]

Aseven-tenths

Bthree-tenths

Cseven-tenth

Dthree-tenth

(2)Long time ago people thought that the land under the sea was_____

[  ]

Amountains

Ba ball fo gas

Cfull of coal

Dflat

 

(3)In fact, under the sea the land _________

[  ]

Ais full of mountains

Bis almost flat

Cis full of coal

Dis a ball of gas

(4)At first, there was ________

[  ]

Aa little salt in the sea

Bmuch salt in the sea

Clittle salt in the sea

Dno salt in the sea

(5)We can know the age of the earth by measuring ________

[  ]

Athe amount of water in the sea

Bthe amount of flat in the sea

Cthe amountofmountainsinthesea

Dthe amount of salt in the sea

阅读与回答问题

  We use the Internet for many things:business, shopping, writing letters, talking to people,

  finding information and so on.In recent years, a new kind of English has grown on the Internet.There's no real word for it yet, so we'll call it e-talk.

  People don't like typing too much.To save time, they turn phrases into a few letters(called acronyms).Acronyms are often used in chat rooms(聊天室).Some of them are:

  BTE(by the way)      BRB(be right back)

  LOL(laughing out loud)   IMO(in my opinion)

  People also use many abbreviations.They are shortened forms of words.Some common abbreviations are:

  info(information)      puter(computer)

  pic(picture)        see(second)

  We usually don't see people when we communicate(交流)on the Net, so people have new ways to show feelings.Most people use their keyboards to draw“feelings”such as:

  :-)(happy)  ;-)(joking)  :-((sad)  :-O(surprised)

  These days, many forums(论坛)have picture feelings.For example:

  (happy)  (sad)  (angry)  (cool)

  There are even whole new words, like“newbies”(someone who is new on a chat board or fo-rum).When you write something bad about someone else, it's called“flaming”the person.

  It takes time for people to get used to(适应)e-talk.Also, different groups on the Net have their own special ways of communicating.Newbies sometimes have to ask other people what they mean.As the Internet grows, e-talk will continue to grow and change.

1.Why do people type acronyms?

________________________

2.What does“BTW, my puter is not working well.”mean?

________________________

3.How do most people show their feelings when they communicate on the Net?

________________________

4.What does the new word“newbies”stand for?

________________________

5.What is the best title for this passage?

________________________

1. From the passage we know that fresh water ________.
[     ]
A. is needed in every country
B. can be found in many factories
C. can be used in many ways
D. is very important for factories.
2. What is the writer mainly talking about in the passage?
[     ]
A. Hot places and dry places.
B. The ways of making fresh water from sea water.
C. How to make good use fo the sun.
D. Water-making factories in different countries.
3. The Symi factory __________ .
[     ]
A. is a fresh water-making factory
B. can be built everywhere
C. can make much fresh water at a time
D. does not need sunshine every day
4. Which is the best way for small and hot places to get fresh water?
[     ]
A. Boiling or heating the sea water.
B. The way in hotter and drier places.
C. The Symi's way
D. Freezing the sea water in cold places.
5. Why aren't there many factories like the Symi factory?
[     ]
A. Because mny new ways are tried to get fresh in small, hot places.
B. Because a lot of water can be made quickly by heating in any places.
C. Because people think that the best way is to get more fresh water with the least money.
D. Because the Symi's way does not work in dry places.