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Paper was first created about 2,000 years ago, and has been made from silk, cotton, bamboo, and, since the 19th century, from wood. People learned to write words on paper to make a book. But in those days, books could only be produced one at a time by hand. As a result, they were expensive and rare. And because there weren’t many hooks, few people learned to read.
Then printing was invented in China. When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. As a result, more people learned to read. After that, knowledge and ideas spread quickly.
Today information can be received online, downloaded from the Internet rather than found in books, and information can be kept on CD-ROMs or machines such as MP3 players.
Computers are already used in classrooms, and newspapers and magazines can already be read online. So will books be replaced by computers one day? No, I don’t think the Yao Ming poster on my bedroom wall will ever be replaced by a computer two metres high!
小题1:What does the writer do before he goes to sleep’?
A.He reads books. | B.He reads newspapers |
C.He looks through magazines | D.He looks at the posters on the wall. |
A.About 2.000 years ago. | B.In the 19th century. |
C.About 1.000 years ago. | D.In the 11th century. |
A. People could not read.
B. People could not write words on paper.
C. People could not find silk, cotton or bamboo.
D People could only produce books one at a time by hand
小题4:What happened after books became cheaper?
A.People didn’t want to buy books. |
B.Printing was invented in China. |
C.Knowledge and ideas spread quickly. |
D.The Internet was introduced to people soon |
A.People won’t need books any more |
B.Books won’t be replaced by computers. |
C.People prefer to find information in books. |
D.Computers have already replaced books. |
Cows produce a lot of wastes. One cow can create 30 gallons of wastes each day. Now imagine the output of over 1,000 cows at Blue Farm. That’s really a big amount.
When farmers clean their barns, they put the wastes in a big heap, and spread some of them on their fields for fertilizer(肥料). But now places like Blue Spruce Farm have a new way of using cow wastes. They use them to produce electricity.
Here’s how it works: A big machine moves back and forth cleaning the barn floor. “The cows aren’t bothered,” says Marie Audet. “They are animals of habit; they get used to it, and just lift one foot and then another to let it go by.”
The machine pushes the manure into a big 600-gallon tank like a small swimming pool. The tank is called a digester (化粪池) because what happens there is just like what happens inside a cow: Bacteria(细菌) get to work and continue to digest the manure.
Methane gas (甲烷、沼气)in the atmosphere is known as a “greenhouse” gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That’s an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators (发电机).
At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.
小题1:We learn from the text that the Audet family is using cow wastes to ______.
A.make electricity | B.produce fertilizer | C.build their farm | D.feed the cows |
A.Marie Audet does the work | B.The job is done by machine |
C.The cows lift the cow wastes | D.Bacteria get to work on them |
A.The power of moving water. | B.The heat of burning coal. |
C.The power of sunlight. | D.The heat of the methane gas |
A.reducing | B.saving | C.recycling | D.changing |
A.To introduce a new way of making electricity | B.To explain how a new energy works better |
C.To show a new rebuilding plan for a big farm | D.To explain the reasons for green house effect |