The human body is a living machine, and, like all machines, it needs “fuel” to supply it with energy. This is provided by the food we eat. But how much do we need to stay healthy?
The energy value of food is usually measured in calories(卡). A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃. The number of calories people need per day is different, as the picture shows. Also, the number of calories you use at any one moment normally depends on the activity you are in. For example, you need more calories for standing than for sitting, more for running than for walking, and so on.
The energy in food is in the form of three kinds of chemical materials—carbohydrate（碳水化合物）, protein（蛋白质） and fat. Carbohydrate provides 3.8 Cal /gm of the energy, protein 4.0 Cal/gm, and fat 8.8 Cal/gm. Each food contains different amounts of these materials, as the round pictures show.
(P= protein C= carbohydrate F=fat)
1.How many calories are needed to raise the temperature of 5kg of water from 35℃ to 90℃?
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A．55. |
B．175. |
C．325. |
D．275. |
2.Which of the following contains the most amount of calories?
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A．Milk. |
B．Rice |
C．Peanuts. |
D．Milk or peanuts. |
3.Who needs the most amount of calories each day?
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A．A woman. |
B．An office worker. |
C．A farmer. |
D．A boy aged 16. |
4.Which of following is True?
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A．You need more calories for swimming than for mountain climbing. |
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B．A child aged 8 needs the same amount of calories every day as a man over 70 does. |
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C．A woman feeding baby needs over 4 times the amount of calories that a baby does. |
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D．Everyone needs the same amount of calories per day. |
5.This passage mainly tells us ______.
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A．all the energy is in food |
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B．the human body needs energy |
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C．the number of calories depends on your activity |
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D．we must only eat peanuts to get calories |
Zach Linsky, 11, watches TV for 3 and a half hours a day and plays video games every other day. Zach, a sixth grader in Washington, D. C., is an American. But unlike many kids, he doesn’t have a TV, VCR, or computer in his bedroom. He only has a boom box (手提录音机).
The survey of 3,155 kids, aged 2 to 18, shows that they spend 5 hours and 29 minutes on average(平均的) a day using some types of media outside of school, including 2 hours and 46 minutes watching TV, 21 minutes on the computer, 20 minutes playing video games, and 8 minutes on the Internet. The good news: The total includes 44 minutes spent reading.
The survey also shows that those aged 2 to 7 spend 3 hours and 9 minutes watching TV every day and shows that 32 percent in that age group have TV sets in their rooms. Among those aged 8 to 18, 21 percent have computers in their rooms, 65 percent have TV sets, and 61 percent say their parents don’t stop them from watching TV. Nearly 1 in 4 say they watch more than 5 hours a day.
“Kids are living much more lonely lives than ever before,” says Kay S. Hytnowitz. “They just disappear into their rooms and spend all of their time with these media.”
1.At what age do children in America spend about five and a half hours on the media a day?
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A．Aged 2 to 7. |
B．Aged 2 to 18. |
C．Aged 8 to 18. |
D．Aged 2 to 11. |
2.How long do kids aged 2 to 18 spend reading?
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A．46 minutes. |
B．21 minutes. |
C．20 minutes. |
D．44 minutes. |
3.How many kids aged 2 to 7 have TV sets in their rooms?
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A．32%. |
B．21%. |
C．61%. |
D．40%. |
4.Why do the children spend all of their time with these media? Because _______.
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A．they have too much free time |
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B．they feel very lonely |
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C．they like these media |
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D．they want to find out something |
5.What’s the problem of the kids in America according to the passage?
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A．There are too many media now. |
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B．Kids spend too much time on the media. |
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C．Kids are too fat. |
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D．Kids would rather be with friends than the TV. |
One day in Overtown, Florida, 3.7 million dollars fell from the sky! It happened when a truck turned over. There was money everywhere! One man said, “The streets were like gold.” Some people took off their shirts and filled them with money.
Police officers went from door to door in the neighborhood. They asked people to return the money. After six hours, the total returned: zero.
No one in Overtown was surprised. Many people in this town are poor. They need the money to buy food for their children. They think that God sent the money to them.
The police say this is a serious crime. “People took thousands of dollars. It’s not their money, and they have to return it.” The police also say it’s dangerous to keep the money because everyone knows the story from the news. People have money in their pockets and their backyards, and other people will try to steal it.
So far, only one person has returned some money. He is a firefighter. He found 300,000 dollars in a bag and gave it to the police. The people of Overtown still have the rest of the money.
1.People filled their shirts with the money from _______.
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A．the sky |
B．a truck |
C．a bank |
D．a shop |
2.What does the underlined word “crime” in the fourth paragraph mean in Chinese?
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A．金钱 |
B．犯罪 |
C．损失 |
D．德行 |
3.Where did people hide the money they got?
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A．In their kitchens. |
B．In their bedrooms. |
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C．In their backyards. |
D．In their sitting rooms. |
4.How much money was still missing?
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A．3.7 million dollars. |
B．300,000 dollars. |
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C．3.4 million dollars. |
D．700,000 dollars. |
5.Which is the best title for the passage?
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A．Money from the Sky. |
B．Police and Money. |
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C．A Truck of Money. |
D．Poor People and Money. |
The seasons in Australia are not like ours. When it is winter in China, it is summer there. Australia is a southern country. It is in the south of the world. June, July and August are the winter months; September, October and November are spring; the summer is in December, January and February; and March, April and May are the autumn months. The north of the country is hotter than the south.
A very large part of this country has no rain at all. The east coast has rain all year, and there are no dry months. The southeast winds blow the whole year. They bring rain from the sea. There is not much rain on the west side. The southeastern part of Australia has summer rain from the southeast winds. They only blow here in summer.
The southwestern part of Australia has winter rain. The west winds blow over the southwest in winter only. In summer, the southwest of the country has no rain. In the north of Australia, there is no rain in winter. The rain comes in summer. The northwest winds bring it.
1.It is ____ in Australia in November.
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A．spring |
B．summer |
C．autumn |
D．winter |
2.In Australia, it is ____ in the south than in the north.
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A．hotter |
B．warmer |
C．colder |
D．cooler |
3.The ____ of Australia has the most rain.
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A．eastern part |
B．southeastern part |
C．southern part |
D．northern part |
4.The southwest of the country has no rain in summer because ____.
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A．it is dry there |
B．the west winds never blow |
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C．the northwest winds blow |
D．the west winds blow only in winter |
5.There is no rain in winter ____ of Australia.
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A．in the southeast |
B．in the north |
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C．in the southwest |
D．in the south |
Do you like the book _______ is yellwo?
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A．whose cover |
B．which cover |
C．cover whose |
D．cover which |
I once lived in a house _______ roof has fallen in.
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A．which |
B．that |
C．what |
D．whose |
