Howcanyoucreateagreatsciencefa-优题课

Elizabeth Freeman was born about 1742 to African American parents who were slaves. At the age of six months she was acquired, along with her sister, by John Ashley, a wealthy Massachusetts slaveholders. She became known as “Mumbet” or “Mum Bett.”
For nearly 30 years Mumbet served the Ashley family. One day, Ashley’s wife tried to strike Mumbet’s sister with a spade. Mumbet protected her sister and took the blow instead. Furious, she left the house and refused to come back. When the Ashleys tried to make her return, Mumbet consulted a lawyer, Theodore Sedgewick. With his help, Mumbet sued(起诉) for her freedom.
While serving the Ashleys, Mumbet had listened to many discussions of the new Massachusetts constitution. If the constitution said that all people were free and equal, then she thought it should apply to her. Eventually, Mumbet won her freedom---- the first slave in Massachusetts to do so under the new constitution.
Strangely enough, after the trial, the Ashleys asked Mumbet to come back and work for them as a paid employee. She declined and instead went to work for Segdewick. Mumbet died in 1829, but her legacy lived on in her many descendants(后裔). One of her great-grandchildren was W.E.B. Du Bois, one of the founder of the NAACP, and an important writer and spokesperson for African American civil rights.
Mumbet’s tombstone still stands in the Massachusetts cemetery where she was buried. It reads, in part: “She was born a slave and remained a slave and remained a slave for nearly thirty years. She could neither read nor write, yet in her own sphere she had no superior or equal.”
What do we know about Mumbet according to Paragraph 1?

A．She was born a slave

B．She was a slaveholder

C．She had a famous sister

D．She was born into a rich family

Why did Mumbet run away from the Ashleys?

A．She found an employer

B．She wanted to be a lawyer

C．She was hit and got angry

D．She had to take care of her sister

What did Mumbet learn from discussions about the new consititution?

A．She should always obey her owners’ orders

B．She should be as free and equal as whites

C．How to be a good servant

D．How to apply for a job

What did Mumbet do after the trial?

A．She chose to work for a lawyer

B．She found the NAACP

C．She continued to serve the Ashleys

D．She went to live with her grandchildren

Running like the wind, roaring (咆哮) like thunder, tigers have long been feared and respected as a king of the animal world. But last week a report said that there are no more than 30 wild tigers left in south China.
This was the conclusion of a team of scientists from China's State Forestry Administration and the World Nature Fund.
The South China tiger, also known as the Chinese tiger, is native to southern China. In the 1950's, there were over 4000 tigers found in mountain forests in the country. But due to the destruction of their natural habitat and uncontrolled hunting, it has been pushed on to the list of the world's top ten most endangered species.
Sixtysix of the big cats can be found in the cages of a dozen zoos around China. But they are nothing like their wild cousins. They have lost their natural skills such as hunting and killing. If they were set free they could not look after themselves.
“Breeding has damaged the quality of the species”， said Pei Enle, deputy director of the Shanghai Zoo.
To reintroduce the species into the wild, the country started a programme to send five to ten young tigers to South Africa. Four of them have already arrived. Progress has been made as two elder tigers have recovered some of their instincts(本能) and can hunt wild animals by themselves at the African base.
“South Africans are very experienced in reintroducing big animals to the wild. The country has very good natural conditions for the tigers to learn in”， said Lu Jun, office director of the National Wildlife Research and Development Center. “We tried in Fujian Province, but it was not successful as there was not a complete ecochain(生物链) and there was a lack of space.”
The tigers should return to China in 2007 when the reservations in Fujian are ready.
What is the main reason for the South China tiger becoming one of the world's top ten most endangered species?

A．Because it has lost its natural instincts.

B．Because there is not a complete ecochain.

C．Because there is no space for it.

D．Because uncontrolled hunting has destroyed its natural living conditions.

How is the programme of sending several tigers to South Africa getting on?

A．Its effect still remains to be seen.

B．Two tigers can already compete with their wild cousins.

C．Some of the tigers are already on the road to recovering their natural skills.

D．The tigers should be able to recover their instincts completely by 2007.

By saying “but they are nothing like their wild cousins”， the writer means that________.

A．they are no longer feared by other wild animals

B．they don't know how to hunt or kill

C．a complete change has resulted in the species because of breeding

D．to reintroduce them into the wild has become an urgent task

What is the purpose of sending young tigers to South Africa?

A．To help the tigers recover their ability to live in the wild.

B．To provide them with a better environment.

C．To get the tigers to go on a tour.

D．To find a complete ecochain for them.

Which one is NOT the reason for South Africa being chosen as the training place?

A．Because the tigers can hunt wild animals by themselves at the African base.

B．Because South Africans are skilled at dealing with the tigers.

C．Because there is a complete ecochain and enough space there.

D．Because the country has good natural conditions for the tigers to learn in.

Since the 1970s, scientists have been searching for ways to link the brain with computers. Braincomputer interface (BCI) technology could help people with disabilities send commands to machines.
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne, Switzerland, demonstrated (展示) a small robotic wheelchair directed by a person's thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.
“Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles.” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.
BCI is a technology that can ________.

A．help to update computer systems

B．link the human brain with computers

C．help the disabled to recover

D．control a person's thoughts

How did Tavella operate the wheelchair in the laboratory?

A．By controlling his muscles.

B．By talking to the machine.

C．By moving his hand.

D．By using his mind.

Which of the following shows the path of the signals described in Paragraph 5?

A．scalp→computer→cap→wheelchair

B．computer→cap→scalp→wheelchair

C．scalp→cap→computer→wheelchair

D．cap→computer→scalp→wheelchair

The team will test with real patients to ________.

A．make profits from them

B．prove the technology useful to them

C．make them live longer

D．learn about their physical condition

Which of the following would be the best title for the text?

A．Switzerland, the BCI Research Center

B．New Findings About How the Human Brain Works

C．BCI Could Mean More Freedom for the Disabled

D．Robotic Vehicles Could Help to Cure Brain Injuries

Winter is a very special time in Northern Norway. Winter also means skiing, and Narvik can offer some of the best skiing in Norway. The view and light change frequently and no two days are the same. For many people, the northern lights are an unforgettable sight, and in Narvik the sky is especially clear and great for watching at night.
The tourist season lasts from February to April, although May can be fascinating too, often with fantastic dry snow and an unbelievable light lasting well into the evening.
Ski hire
It is possible for adults and children to hire skiing equipment such as snowboards. All equipment is prepared for us. If you would like to book your equipment, please email Narvikfjellet.
Cross-country skiing
There are 12 kilometers of cross country ski run in Narvik. You need to bring your own skis as there is no cross-country hire. However, equipment can be bought at local sports shops in and around Narvik.
Off-piste skiing（非场地滑雪）
In order to explore Narvik’s off-piste opportunities you need to know the dangers when choosing routes. It is suggested that you bring necessary equipment such as a shovel（雪铲）and a GPS locator. Ask Narvikfjellet for an experienced guide. With a guide you can explore Narvik’s special off-piste areas in a safe manner.
Sometimes it is nice to do something different and not everybody enjoys skiing. Then you can go horse-riding, or visit the local museums.
Price examples for the 2012--2013 season

Time	Children(8-15years)	Adults
1 day	NOK 230	NOK 325
3 days	NOK 590	NOK 835
5 days	NOK 815	NOK 1,170
7 days	NOK 970	NOK 1,375
Children 0-7 years can enjoy the service for free

In Northern Norway, the tourist season may last ______.

A．one month	B．two months
C．three months	D．four months

What can we know from the passage?

A．You can book skiing equipment through the Internet.

B．You are provided with skiing equipment for free.

C．Narvik is located in the south of Norway.

D．Narvik is open to adults and children over eight.

If Mr. and Mrs. Smith stay in Narvik with their six-year-old daughter for three days in 2012,they should pay ______.

A．NOK 1,160	B．NOK 1,425
C．NOK 1,670	D．NOK 2,260

Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need.
We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place. The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard. Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place.
Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example. But this is not just about supermarkets. It is about all of us.
We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But is also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realize just how much unnecessary material are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.
The author uses figures in Paragraph 2 to show _______.

A．the tendency of cutting household waste

B．the increase of packaging recycling

C．the rapid growth of super markets

D．the fact of packaging overuse

According to the text, recycling ______.

A．helps control the greenhouse effect

B．means burning packaging for energy

C．is the solution to gas shortage

D．leads to a waste of land

What can be inferred from Paragraph 4?

A．Unpackaged products are of bad quality.

B．Supermarkets care more about packaging.

C．It is improper to judge quality by packaging.

D．Other products are better packaged than food.

What can we learn from the last paragraph?

A．Fighting wastefulness is difficult.

B．Needless material is mostly recycled.

C．People like collecting recyclable waste.

D．The author is proud of their consumer culture.