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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.
[ ]
|
A .seven-tenths |
B .three-tenths |
|
C .seven-tenth |
D .three-tenth |
(2)Long time ago people thought that the land under the sea was_____
.[ ]
|
A .mountains |
B .a ball fo gas |
|
C .full of coal |
D .flat |
(3)In fact, under the sea the land _________
.[ ]
|
A .is full of mountains |
B .is almost flat |
|
C .is full of coal |
D .is a ball of gas |
(4)At first, there was ________
.[ ]
|
A .a little salt in the sea |
B .much salt in the sea |
|
C .little salt in the sea |
D .no salt in the sea |
(5)We can know the age of the earth by measuring ________
.[ ]
A
.the amount of water in the seaB
.the amount of flat in the seaC
.the amountofmountainsintheseaD
.the amount of salt in the sea 查看习题详情和答案>>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?
________________________
| A.has borrowed | B.has lent | C.has bought | D.has kept |
【小题1】She has a new bike.(改为否定句)
She ____ ____ a new bike.
【小题2】They are English.(同义句转换)
They are ____ ____.
【小题3】My sister is eleven.(对画线部分提问)
____ ____ is your sister?
【小题4】 Tom has big eyes.(改为一般疑问句)
____ Tom ____big eyes?
【小题5】They are their apples.(对画线部分提问)
____ ____ are these? 查看习题详情和答案>>
Reading is an activity that people enjoy a lot in their free time.
Some like reading newspapers and 【小题1】 enjoy novels or comic books. My 【小题2】 books are those about the lives of great people. Reading them always 【小题3】 me a lot of ideas on how to make my own life better.
Great people are remembered not 【小题4】 they were handsome or beautiful, but because they did not give up 【小题5】 their lives were difficult. They tried to use every chance to change their lives and make the world better.
One good example is Orville and Wilbur Wright, the two brothers who invented the 【小题6】. The plane has made the world into a small village. Hard work, not good luck, is the 【小题7】 why the Wright brothers could 【小题8】 this convenient machine and become great people. Today we will remember them when we see planes 【小题9】 the sky.
Whenever I read stories about great people, I always 【小题10】 a lot from them and they encourage me to move forward.
This is why I enjoy reading about great people’s lives. 查看习题详情和答案>>