It's time to go home now. I am on a bus on a rainy day, and a woman with a dog gets on the bus. It is a big dog and its feet (脚) are not clean. I don't want the dog to sit next to me. But the woman says to the conductor (售票员), "Oh, I pay
for (付钱) my dog. Can he sit here like the other people?"
The conductor looks at the dog and says, "Yes, madam. But like the other people, he must put his feet under the chair." I am going home ______.
| A．by bike | B．by bus | C．by car | D．by jeep |
What do I see?
| A．A bus | B．A conductor | C．A dog | D．A woman with a big dog |
I don't want the dog to sit next to me, because ______.
| A．the dog is big | B．the dog is not clean |
| C．the dog has no ticket (票) | D．the dog isn't mine |
Why do the woman and the dog get on the bus?
| A．It is a rainy day | B．No one is on the bus |
| C．The dog can sit | D．The woman is a conductor |
The meaning (意思) of the conductor's words is ______.
| A．the dog's feet are like the other people |
| B．the dog must like a man |
| C．the dog must not (不可以) sit on the chair |
| D．the dog can sit here |
Dogs might have the latest tools in the fight against cancer （癌症）：their noses!Researchers at California's Pine Street Foundation （PSF） say they have trained five dogs to smell cancer on a prison's breath.This could be exciting news.
A dog's sense of smell may be 10，000 to 100，000 times stronger than ours.But can dogs really smell illness？PSF researcher Michael McCulloch says yes. "We were very surprised by how exact they were，" he said. "They were telling who had cancer，and they were also saying who didn't."
McCulloch and his team asked four healthy people and one with cancer to blow into plastic tubes （塑料管）.Special materials in the tubes kept the things of each breath.The tubes were then placed one yard apart.Finally the dogs were allowed to smell the tubes.Each dog had been trained for three weeks to sit when it smelled cancer.Ninety﹣nine percent of the time，the dog sat next to the tubes blown into by patients with lung cancer.The dogs were right 88 percent of the time about breast cancer.
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Dogs in the Pine Street Foundation test were trained to sit when they smelled cancer.How well did they perform？Take a look at this chart to find out. |
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|
Breath Sample |
Number of Times the Dogs Sat Down |
Number of Times the Dogs Kept Standing |
|
Breath from lung cancer patients |
564 |
10 |
|
Breath from healthy persons |
4 |
720 |
No lab test for cancer has given more correct results than this test.The results are so amazing that many experts question the dogs' smelling power.They wonder if there were other reasons why the dogs did so well.For example，they thought the way the dog trainers behaved could have influenced how the dogs acted.However，most experts agree that this study is important.The information could help scientists create a simple breath test for cancer in the future.Once again humans may be getting a helping paw or nose﹣from their best animal friends.
（1）What's the latest tool a dog might have in the fight against cancer？
A.Tooth.
B.Nose.
C.Ear.
（2）What happened first in the Pine Street Foundation test？
A.The dogs were trained.
B.The tubes were placed one yard apart.
C.The dogs smelled the tubes.
（3）What was a dog supposed to do when it smelled cancer？
A.Smell again.
B.Turn around.
C.Sit down.
（4）Look at the chart.How many times did the dogs keep standing when they smelled the breath from healthy persons？
A.Less than 10 times.
B.Almost 600 times.
C.About 700 times.
（5）Why do many experts question the dog's smelling power？
A.Because no lab test for cancer has given more correct results.
B.Because the dog trainers influenced how the dogs acted.
C.Because they don't think this study is important.
Can a green machine help the world's poorest kids learn better？Nicholas Negroponte thinks so.He and his team of scientists have invented a new type of computer.As a result，many children who live in poverty （贫穷） will have their own laptop computers!
Negroponte works at a university.He started a group called One Laptop Per Child （OLPC）.The people at OLPC don't work for money.They work to help children learn.OLPC makes computers that don't cost a lot.Then they sell the machines to governments of countries that have many people live in poverty.The governments then give the computes to kids for free.
The XO Laptop computers are made for school﹣aged children in developing nations.Many of these children live in faraway areas and go to schools with classrooms.In order to work，the laptops have to be lasting and student﹣friendly.
The machines have many fun characters like a built﹣in video camera，voice recording，and games.The WiFi lets students share information on the Web and read e﹣books.They also can make music and chat with friends.
Another great character is that it can last for a long time.It can be hand charged and also can be recharged by connecting to a solar panel.Because of these characters the XO laptops make learning fun while helping the environment.
The computers have a colorful name﹣"the green machine".Negroponte thinks they could make a difference in the lives of millions of kids.He says， "Every problem you can think of﹣poverty，peace，the environment﹣is solved with education."
OLPC plans to give out over ten million computers in the next few years.Kids in Thailand，Nigeria，Brazil，and Argentina will get most of them.China and Egypt also want to take part in the program.After that，Negroponte hopes to sell computers to other countries with high poverty.
（1）Negroponte thinks his laptop computers will help the world's poorest kids to .
A.work at home
B.go to school on time
C.learn better
（2）What can we know about the people at OLPC according to Paragraph 2？
A.They work for money.
B.They give computers to kids for free.
C.They sell computers to governments with many people living in poverty.
（3）Why do XO laptops make learning fun while helping the environment？
A.Because they are lasting and student﹣friendly.
B.Because they are made for school﹣aged children.
C.Because they have a colorful name.
（4）What does the underlined word " charged" mean in Chinese？
A.携带.
B.充电.
C.使用.
（5）Who will get most of the computers in the next few years？
A.Kids in Thailand.
B.Kids in China.
C.Kids in Egypt.
（1）41.0% of kids aged use the Internet.
A.5﹣9
B.10﹣13
C.14﹣17
（2）What percentage of kids gets news or information online？
A.89%.
B.76%.
C.38%.
（3）What do 43% of kids usually do on the Internet？
A.Play games.
B.Buy books.
C.Send or receive instant messages.
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China's unbelievable high﹣speed rail network At the beginning of the 21st century China had no high﹣speed railways.Slow，crowded and often uncomfortable trains ran across this vast country，with low average speeds making journeys such as Shanghai﹣Beijing a test of travel. Today，it's a completely different picture.With 37，900 kilometers of lines，linking all of its major big cities.China has the world's largest work of high﹣speed railways.Half of that total has been completed in the last five years alone，with a further 3，700 kilometers due to open in the coming months of 2021.The network is expected to double in length again，to 70，000 kilometers，by 2035. |
（1）How were the trains in China at the beginning of the 21st century？
A.Fast.
B.Comfortable.
C.Crowded
（2）How many kilometers of lines are due to open in the coming months of 2021？
A.3，700.
B.37，900.
C.70，000.
John was born in 1838.When he turned 11 years old，his family moved to the United States from Scotland.They began a new life in Wisconsin that year.
John showed his love of nature in his early years.He liked playing outdoors.He also loved working outdoors on his father's farm.
When he was 29，John had an accident at work.The accident hurt his eyes.As a result he missed looking at nature for months.Luckily，he could see again.Later that year，John decided to spend all his time learning about nature.He would travel in order to make his dream come true.
First.John hiked 1，000 miles.He studied plants and wildlife He then took a trip by ship.It was to learn more about the world around him.In 1869，John went to the Sierra Nevada Mountains.He climbed the mountains and wrote down what he saw.And he wrote about the animals and plants as well.By the time John turned 33，people were reading what he had written.They realized the importance of nature from John's books.Many people understood and accepted his thoughts.
In 1852，John started the Sierra Chub.Many people joined it.They agreed that forest wildlife should be protected.Today，the club has more than two million members.It has a great influence on the people who love nature.They all help spread the ways to protect the environment.
John's books are still read today.He is famous for his love of nature.
根据短文内容，回答下列问题。
（1）Where did John and his family begin their new life？
（2）How did John show his love of nature in his early years？
（3）What was John's dream after he could see again？
（4）When did John go to climb the Sierra Nevadan Mountains？
（5）Why did John do things like taking trips，writing books and starting a club？（请用一句话作答）