题目内容

What is the hottest topic at your school recently? In Taiyuan No. 55 Middle School, it’s money.

The school held an activity called “making money” last weekend. About 200 Junior 1 and Junior 2 students were divided into 30 teams. They went out to make money by selling things.

What did they choose to sell? Some sold newspapers; some chose bottled water; some sold environmentally friendly shopping bags and bamboo baskets.

Hu Qing’s team decided to sell some useful books in front of the Children Activity Center. They thought parents would like to buy the books for their children. But unfortunately, they met urban management officers (城管). The officers asked them to leave. “We played hide-and-seek (捉迷藏) with the officers for the whole morning” said Hu. “Finally we had to give up.”

Wang Bing and her team sold ice cream in a square. They didn’t meet any officers. But few people were interested in what they were selling. The team then put up a board saying “For Country Kids”. It worked. More people came to their stall (小摊). A foreigner even gave them 100 yuan. “He didn’t want any change. He said he wanted to help the children,” said Wang. “We were touched.” Later that day they gave the 100 yuan and more to the “Project Hope” office.

Meng Zhaoxiang and his team were luckier. They sold all their cakes in four hours, spending 39.5 yuan and getting back 80 yuan. They made 40.5 yuan. “It was not easy to make the money,” said Meng. “Some people just looked. Others just tasted but didn’t buy. Now I know how hard it is for our parents to make the money we need to lead happy lives.”

1.______ took part in the activity.

A. Some teachers

B. About 200 of Junior 1 and Junior 2 students

C. About 200 students of the three grades

D.About200 Junior 1 students

2.Hu Qing’s team finally gave up because ______.

A. the parents didn’t like to buy the books

B. the Children Activity Center was too crowded

C. the officers didn’t allow them to sell anything there

D. the team played the game of the hide-and-seek the whole morning

3.Why did more people come to Wang Bing’s stall at last?

A. The people were willing to help country kids.

B. A foreigner came up and helped them.

C. The team put up a magic board.

D. The people were interested in their ice cream.

4.According to the passage the students learn ______.

A. it’s impossible for them to make money

B. it’s very important for them to make a living

C. it’s not easy for their parents to make money

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Alaska’s Arctic lakes now freeze later and melt earlier in the year than in 1950,leaving them easy to suffer water loss from evaporation(蒸发)and possibly adding to local warming,a new study finds.The winter ice season near Barrow,Alaska,is shorter than in 1950,researchers reported Jan.30 in the journal The Cryosphere.

Lake ice is also thinner each winter.The scientists surveyed 402 lakes on the North Slope,where permafrost (permanently frozen ground)and shallow lakes dominate the areA. In 2011,the lake ice was 38 percent thinner than in 1950,and 22 percent fewer lakes froze through to their bottoms.

“When we saw the actual numbers we were shocked at how dramatic the change has been,”lead study author Cristina Surdu,of the University of Waterloo in Canada,said in a statement.Surdu and her co-authors analyzed the changes in lake—ice thickness and ice cover with satellite images and climate model simulations(satellite images are only available from 1991).

The climate models suggest the Arctic lakes froze almost six days later and broke up about 18 days earlier in the winter of 2011 compared with the winter of 1950.“The changes in ice and the shortened winter affect Northern communities that depend on ice roads to transport goods,”Surdu saiD. For example,every winter,oil companies build roads over frozen lakes to carry supplies to Prudhoe Bay.

“The dramatic changes in lake ice may also contribute to further warming of the entire region,because open water on lakes contributes to warmer air temperatures,”Surdu saiD. The Arctic is warming twice as fast as the rest of the planet,for reasons that may include its layered atmosphere,which traps heat,and the loss of sea ice and snow cover,which help reflect the sun’s energy when present.

1.What does the text mainly tell us?

A. Arctic 1akes now freeze earlier and melt 1ater.

B. Alaska’s local warming is decreasing sharply.

C. Arctic lakes are losing ice.

D. Arctic lakes hold more flesh water than before.

2.According to the text,the great changes of Alaska’s Arctic lakes ________.

A. are totally beyond Surdu’s expectations

B. are completely within Surdu’s expectations

C. come as no surprise to Surdu and her co-authors

D. come as a great excitement to Surdu

3.How many days was the winter ice season of Arctic 1akes in 2011 shorter than that in 1950?

A. 6 days.

B. 12 days.

C. 18 days.

D. 24 days.

4.What is the last paragraph mainly about according to Surdu?

A. What reflects the sun’s energy.

B. How its layered atmosphere traps heat.

C. Why our planet is warming.

D. Why the Arctic region is becoming warmer.

Researchers in the US say they might have discovered how to fight against and even reverse some processes of ageing, at least in mice. Injecting the blood of young mice into the older ones improved their brainpower, a study found. Scientists at Stanford University plan to carry out trials in people in the hope that new treatments for dementia(痴呆症) can be developed.

“There are factors present in blood from young mice that can recharge an old mouse’s brain so that it functions more like a younger one,”says Dr. Tony from Stanford University School of medicine. In the study published in Nature Medicine, mice aged 18 months were given injections of the blood taken from mice aged 3 months. The injected mice performed better on memory tests than mice of the same age that had not been given the blood. Dr. Tony said it was not known whether the same was true of humans, but a trial was planned.

A research center in UK said the treatment restored certain aspects of learning and memory in mice, but was of unknown importance to humans. The research, while very interesting, did not test the type of brain damage that was seen in dementia, which is not a necessary consequence of ageing.

Meanwhile, two similar studies by a separate team have thrown more light on how young blood may benefit the old, in mice at least. A substance in the blood of mice previously shown to have an anti-ageing effect on heart muscle also improved brain cells, according to a Harvard team. The research, published in Science, found the blood factors encouraged the growth of brain cells in old mice, and restored their sense of smell. The same chemical also improved muscle power of aged mice, the researchers found.

1. The underlined word in paragraph 1 probably means _________.

A. change B. destroy

C. speed D. increase

2. Scientists in the US will test the discovery in humans with the aim of __________.

A. proving the possibility to live longer.

B. showing the importance of scientific research.

C. publishing the study in Nature Medicine.

D. treating an age-related disease successfully.

3.According to the studies, the blood from young mice benefits the old in certain ways except in_________.

A. memory B. muscle power

C. fur color D. brain cells

4.What’s the author’s attitude to the anti-ageing studies?

A. supportive B. objective

C. negative D. doubtful

阅读下面材料,在空白处填入适当的内容(一个词)或括号内单词的正确形式。

Why is pink or purple a color for girls and blue or brown for boys?

The answer depends largely ____1._____ cultural values as well as personal experiences. To the Egyptians, green was a color ___2.____ represented the hope and joy of spring, while for Muslims, it means heaven. Red is a symbol of good luck in many cultures. During the Spring Festival in China, children __3.____(give) money in a red envelope to bring good fortune in the New Year. For many nations, blue is symbol of protection and religious beliefs. Greek people often wear a blue necklace hoping to protect __4.___ against evils(灾祸).

People’s ___5.____(choose) of colors is also influenced by their bodies’ reactions toward them. Green is said to be ___6.__ most restful color. It has the ability to reduce pain and relax people both mentally ___7.__ physically. People ___8.___ (work) in green environment have been found to have fewer stomach aches.

Red can cause a person’s blood pressure to rise and increase people’s appetites(食欲). Many decorators will include different shades of red in the restaurant. And many commercial websites will have a red “Buy Now” button because red is a color that __9.___ (easy) catches a person’s eye.

Blue is another calming color. Unlike red, blue is believed to cause people to lose appetite. So __10.__ you want to eat less, some suggest that eating from blue plates can help.

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