题目内容

Tu Youyou, born in December, 1930, is a Chinese scientist and educator. She is best known for discovering artemisinin (青蒿素) used to treat malaria (疟疾), which has saved millions of lives. For her work, Tu received the 2015 Nobel Prize in Medicine.

Scientists worldwide had tried over 240, 000 medicines to treat malaria without success. In 1969, Tu Youyou, then 39 years old, decided to turn to traditional Chinese herbs(草药) for possible solutions. She looked into the Chinese medical classics in history, visiting traditional Chinese doctors all over the country on her own. She gathered her findings in a notebook, in which she recorded 640 methods of treating malaria. She and her team also experimented with over 2, 000 traditional Chinese herbs.

During this time, her husband was forced to work in the countryside, and their young daughter had to take care of herself in Beijing.

Years of research all came down to one type of herb named qinghao. The animal tests showed it was completely effective in mice and monkeys, So Tu volunteered to be the first human subject. “As head of this research group, I had the responsibility’ she said. It was safe with, her; so she continued to try it out with more human patients.

In 2007, her office was in an old apartment building in Beijing. Before 2011, Tu Youyou had been described as “almost completely forgotten by people1”, Yet in 2015, the Nobel Prize committee said her discoveries had given the world powerful new ways to fight a powerful disease which affected hundreds of millions of people every year. In terms of improving human health and reducing suffering, Mrs. Tu’s contribution is beyond words.

1.How did Tu Youyou find qinghao as a treatment?

A. By testing it on children. B. By researching for years.

C. By reading foreign books. C. By asking malaria patients.

2.What does the underlined word “effective” mean in Paragraph 4?

A. Successful. B. Useless. C. Unclear. D. Normal

3.What can we infer from the last paragraph about Mrs. Tu?

A. She couldn’t afford an apartment in Beijing.

B. She didn’t want her findings to be known.

C. She didn’t care much, for fame while researching.

D. She wasn’t able to describe her findings dearly

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Every year,billions of kilograms of fresh produce are wasted in the United States.Meanwhile,millions of poor Americans go hungry,without access to healthy and affordable meals.Evan Lutz,CEO and founder of Hungry Harvest,was inspired to act after seeing extreme poverty in areas of Baltimore,Maryland.He wants to reduce the so—called food waste in that area.His work is to make sure no food goes to waste and no person is ever hungry in America.And he combines that goal with a love for business.

Hungry Harvest is a business which collects and sells fruits and vegetables that most food companies will throw away.Everything doesn't grow the same way on a farm.But all that is too big or too small gets thrown out.That is why everything in a grocery store looks similar.Hungry Harvest will box those imperfect ones and deliver them to customers once a week.

For every purchase,Hungry Harvest delivers healthy food to people in need.Hungry Harvest has recovered 300,000 pounds of produce to date and provided 100,000 pounds to those in need.

Lutz established Hungry Harvest in 2014.Its success depends on team work.Every week on Monday or Tuesday they will decide what will go into the next week's box by calling up packing houses and wholesalers to see what they will normally throw away that week.They then place the order.The last step ls to send goods to customers.

In January 2016,Lutz appeared on the American business competition television show "Shark Tank" and got even more than he expected: $100,000.Lutz is using the money to expand.Actually,more than six billion pounds is wasted each year due to "ugly" surface.Hungry Harvest is on the way to saving more food from going to waste and feeding hungry families.

1.Why is Hungry Harvest set up?

A. To reduce poverty and food waste.

B. To collect and sell thrown—away food.

C. To make enough money to expand.

D. To sell deserted food to the poor.

2.The underlined word "recover" in Paragraph 3 means " ".

A. get over an illness

B. regain a former condition after a financial loss

C. reuse materials from waste products

D. get back the use of one's sense

3.Why do you think Evan Lutz is successful?

a.He combines his goal with a love for business.

b.He depends on team work.

c.He got $100,000 from a TV show.

d.He is kind-hearted and creative.

A. a,b,c B. b,c,d

C. a,c,d D. a,b,d

4.Who will not benefit from Evan Lutz's business?

A. Hungry Harvest. B. Hungry families.

C. Food companies. D. Fruit farmers.

Who could have imagined that a treadmill(跑步机)on wheels would one day become a thing?!? Lopifit is an unusual means of transportation that allows you to power an electric bicycle by walking on a treadmill.

Lopifit founder Bruin Bergmeester says it all started when he asked himself the question “How can I use a treadmill outdoors?” He finally came up with a new design, adding an electric motor, and the Lopifit was born. It’s similar to an electric bicycle in that the motor only works when the rider puts power in as well. The Lopifit senses when you walk on the treadmill and uses the motor to turn a drive chain at the back of the treadmill, helping you reach a top speed of 17 miles per hour.

To use the Lopifit, simply turn on the battery(电池)and use your foot to slide the treadmill backwards and start the motor. Then get on and enjoy the ride! If you need speed, just walk on the treadmill, and if you want to coast(惯性滑行), all you have to do is stay still and admire the view. To stop, you have two hand breaks.

The Lopifit first hit the streets in 2014 and, unsurprisingly, became a hit overnight. That was actually quite challenging for the company, because it started getting calls for orders, but it was nowhere near ready for mass production. The unique treadmill bicycle could be bought this year, and Lopifit is struggling to keep up with demand, although the price is up to $2,115.

Some people consider this means of transportation stupid and unnecessary, although there is a very loyal fan-base of so-called Lopifitters. They simply believe that if you’re going to walk, you might as well do it the old-fashioned way.

But the Lopifit does have the special advantage of helping you “walk” really fast without much effort, or walking at cycling speed, if you will.

1.Lopifit is an electric bicycle which ________.

A. can be powered by the drive chain

B. can work without an electric motor

C. works when you walk on the treadmill

D. stops when you slide the treadmill forward

2.What is Paragraph 3 mainly about?

A. The design of a Lopifit. B. The function of a Lopifit.

C. The structure of a Lopifit. D. The operation of a Lopifit.

3.What is probably the author’s attitude towards Lopifit?

A. Confident. B. Concerned.

C. Curious. D. Doubtful.

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