题目内容
How many boxes altogether?
B. Thirty-seven.
C. Forty-three.
D. Forty-two.
When the Audet family turns on the lights at Blue Farm, they are using electricity that comes from cows—cow manure (粪肥), to be specific.
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 |
You may know the English letters A, B and C. But do you know there are people called ABC? You may like eating bananas. But do you know there is such a thing a “banana person”? How strange! Are these people from “another earth”? No, they are just Chinese people like you and me.
ABC means American-born Chinese. An ABC is a Chinese, but was born in the United States. Sometimes, people call an ABC a “banana person”. A banana is yellow outside and white inside. So, when a person is a banana, he or she is white inside-thinking like a Westerner and yellow outside-looking like a Chinese.
Do you know why? Usually, ABCs know little about China or the Chinese language. Some of them don’t speak Chinese. Also, they are not interested in Chinese politics.
But if ABCs can not speak Chinese, can we still call them Chinese people? Yes, of course. They are Chinese. They are overseas Chinese. These people may be citizens (公民) of another country like the US, Canada or Singapore. But they have Chinese blood. Their parents, grandparents or even great-grandparents were from China. They all have black eyes and black hair. But they are not Chinese citizens. They are not people of the People’s Republic of China. For example, we all know the famous scientist, C.N.Yang(杨振宁). He got the Nobel Prize for Physics in 1957. Chinese people love him. But he is an American citizen.
【小题1】“ABC” in this passage means “ ”.
A.three English letters | B.a kind of banana |
C.Chinese born in America | D.Americans born in China |
A.their bodies are white inside but yellow outside |
B.they think like Westerners but look like Chinese |
C.they were born in China but got to study in America |
D.they like to eat bananas |
A.国籍 | B.血统 | C.爱心 | D.皮肤 |
A. different kind of bananas B. the life story of C.N.Yang
C. the Noble Prize D. overseas Chinese