题目内容
________ dollars ________a lot of money.
- A.21 billion, is
- B.21 billions, are
- C.21 billion, are
- D.21 billions of, are
天天向上一本好卷系列答案
小学生10分钟应用题系列答案About 70，000，000 Americans are trying to lose weight．This is almost one out of every three people in the United States．Some people eat 1 food and they hardly have any fats or sweets. Others do running exercise with machines，take medicines，or even have operations.2 you can see losing weight is 3 work，and it will also cost a lot of money．But 4 do so many people in the United States want to lose weight?
Many people in the United States worry about their look of the body．For many people，looking nice also means to be 5 ．Other people worry about their health as many doctors 6 overweight is not good．
Most people want to find a faster and 7 way to take off fat，and books of this kind are very popular．These books tell people how to lose weight．Each year a lot of new books like these are 8 ．Each one says it can easily help people take fat away．
Losing weight can be expensive．Some overweight people go to health centers，like La Costa in California．Men and women 9 several hundred dollars a day at these health centers．People live there for one week or two，taking exercise，eating different foods．Meals there may be just a little．All this works for losing weight． 10 4 days on the program，one woman called Mrs. Warren lost 5 pounds(2.27kg)．At 400 dollars a day, she spent 320dollars to lose each pound．But she said she was still glad to do so．
Health centers，books，medicines，operations，running and exercise machines all get a lot of money．So in the United States，losing Weight may mean losing money too。
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It was Mother's Day. John was so busy with his work that he had ___1___time to return home. When he passed by a flower shop in the evening, he got an idea. "I'll send Mum some roses ."
___2___John was picking his flowers, another young man went inside. "How many roses can I get for only five dollars, Madam?" he asked. The assistant Nancy was trying to tell him roses were as ___3___as forty dollars a dozen . Maybe he would only buy some carnations.
"No, I have to have red roses. " He said, "My mum was badly ill last year and I didn't spend much time with her. Now I want to get something special, it has to be roses ___4___rose is her favorite. "
After hearing it, John said he would pay the rest of the money for the young man. When the young man took the roses, he almost jumped into the air and ran out of the shop. John was quite excited to see that. Then John took out his money and___5___his roses and asked the assistant to send them to his mother.
As he walked out, he saw the young man crossing the street and going into a___6___. But soon he found it was not a park but a cemetery. Crying, the young man___7___put down the roses," Mum, oh, Mum, why didn't I tell you how much I loved you? God, please help ___8___find my mum and tell her I love her..."
___9___thinking anything, John turned and quickly walked back to the shop. He would take the __10____home himself.
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If you have a bottle of water recycled(再利用) from urine(尿), would you drink it? Astronauts at the ISS may soon do so.
NASA(美国航空航天局) said it would use a high-tech machine to recycle wastewater at the ISS. The machine will recycle water for washing hands, shower water, water for brushing teeth and even urine to make drinking water. It will save millions of dollars each year.
At present, each ISS astronaut uses about 4.4 liters(升) of water every day. It costs about 24 million dollars a year to send water up to the ISS. A liter of water costs about $ 11,000.
The machine will be sent to the ISS later. NASA hopes it will recycle about 93% of all the water used on the station.
Will the water be clean? Different chemicals will be put in the wastewater. The water will be heated to 130℃ to kill bacteria(细菌). Scientists say that the recycled water is thousands of times better than the water from a city tap.
【小题1】NASA will use a high-tech machine to recycle wastewater at the ISS to ______.
| A．protect the ISS |
| B．make the astronauts work harder |
| C．provide better water and food for the astronauts |
| D．save the cost of sending water up to the ISS |
| A．4.4 thousand | B．11 thousand |
| C．48.4 thousand | D．24 million |
| A．freezing | B．heating |
| C．shaking | D．precipitating(沉淀) |
| A．water recycling at the ISS |
| B．the International Space Station |
| C．a high-tech machine |
| D．the cost of NASA |
| A．The recycled water is much better than that from a city tap. |
| B．The high-tech machine will recycle all the water used on the station. |
| C．The ISS astronauts use more water than us. |
| D．The high-tech machine can only recycle urine to make water. |
Last Sunday afternoon, I was having dinner in a restaurant when my friend Poor came in. Poor is working in a bank and is quite rich, but he is always borrowing money from his friends and never pays it back. Poor saw me and came to sit at my table. He had never borrowed any money from me. When he was eating, I asked him to lend me two dollars. To my surprise, he gave me the money at once.“I have never borrowed any money from you,”Poor said,“So you can pay for my dinner.”
Read the passage and choose the best answers.(阅读短文,选择最佳答案。)
【小题1】The story happened .
| A．at home | B．in a restaurant |
| C．in a bank | D．in an office |
| A．knows him well | B．doesn’t know him |
| C．often lends him some money | D．often borrows money from him |
| A．busy | B．clever | C．rich | D．poor |
| A．Because they are brothers. |
| B．Because Poor is rich. |
| C．Because the writer is rich. |
| D．Because Poor wanted the writer to pay for the dinner. |
| A．Poor is an old man | B．Poor is friendly |
| C．the writer paid for the dinner | D．the writer is poor |