1、Facilities like electric rice cookers,microwaves,and electric kettles,make it easy for people to keep food warm and enjoy a comfortable winter. So how did Chinese people in ancient times keep food warm in winter without these?In fact, ancient Chinese people used their own methods of heat preservatio
2、n as early as the Shang and Zhou Dynasties. “Wen Ding”,ancient rice cookerOne of the major functions of an electric rice cooker is to keep food warm. The “Wen Ding”,an ancient cooking container, served the same purpose, but instead of using electric energy, the ancient cooking container preserved he
3、at by burning fuels like charcoal.The “Wen Ding” unearthed in Nanjing in 1989 is thought to be the oldest of its kind discovered in China, dating back to the Stone Age. The craftsmanship of making the “Wen Ding” was developed in the Bronze Age. The bronze Ding from the Shang and Zhou Dynasties took
4、on different shapes and structures. “Ran Lu”, ancient small hot potThe “Ran Lu” is a small size cooking vessel (器皿) made of bronze, which can be divided into three parts. A charcoal stove forms the main structure, with a bottom tray to hold charcoal ashes, and a movable cup at the top. Some experts
5、have concluded that the vessels structure suggests it may have been used as a small hot pot and that these vessels became popular in the Warring States Period (475221 B.C.). Bronze You,ancient kettleThe Bronze You was one of the most common wine containers during the Shang and Zhou Dynasties. The Br
6、onze You can also be used to warm wine. For example, the Bronze You with beast mask design, unearthed in Jiangxi Province, has an opening where charcoal could be placed. Just as people today cant do without an electric kettle, the Bronze You allowed people to enjoy a hot drink. Bronze Yan, ancient s
7、teamerAlthough the “Wen Ding” was effective at keeping food warm, the ancient Chinese people later found that its burning process produced pollution. As a result, the Bronze Yan was made with a two-tier structure and used to steam rice and other grains. After the Eastern Han Dynasty (25A.D.220A.D.),
8、further improvements to the Bronze Yan led to the modern-day steamer.21. When did the “Ran Lu” become popular?A. In the Zhou Dynasty. B. In the Eastern Han Dynasty. C. In the Warring States Period. D. In the Stone Age. 22. The Bronze You,unearthed in Jiangxi Province, has an opening to .A. place cha
9、rcoal B. store wine C. pour water D. hold charcoal ashes23. What is the unique advantage of the Bronze Yan?A. It is warm. B. It is convenient. C. It is useful. D. It is environment-friendly. B Mahendra, a former senior officer at the State Bank of India, talks about his disabled and wounded dogs lik
10、e a father about his childrenwith the same love, affection, and warmth. Hes a wellknown animal rights activist, the secretary at People for Animals (PFA). But nothing explains Mahendra better than his love for animals. It was this love that led him to establish Indias first shelter home for dog
11、s living with disabilities. It all started in 1998 when, while taking a midnight walk, Mahendra came across a very weak dog on the street, whose bones were seen under its skin. Mahendra decided to feed it and for the next couple of days it became the centre of his life, until the night when he found
12、 it dead. Since then, Mahendra started providing treatment to all wounded and sick dogs he came across. After some time, somebody told Mahendra about PFA, Indias largest animal welfare organization, chaired by Mrs Maneka Gandhi. Mahendra contacted her and, impressed by the work he was doing, Mrs Gan
13、dhi asked him to start a PFA chapter in Ahmedabad. Thus, in 2014, he started the shelter. It took a long time for Mahendra to find land where the shelter could be set up. Finally, Ramesh Bhai Patel, a farmer from a village named Jundal, agreed to give his land for nothing. Along with a team of four
14、doctors and many volunteers, the shelter now has twenty&five dogs that were unable to walk at all when they were brought in. Today, theyre slowly healing. Dogs that have healed with proper treatment are sent back to where they came from if the environment there is safe. However, the shelter will be
15、home to the blind dogs for all their lives, says Mahendra. The shelter runs on the money coming from Mahendras own pocket. There have been some financial crunches now and then but Mahendra is determined that no matter what challenges come their way, theyll fight through.24.From Paragraph 1, what can
16、 we know about Mahendra?A.His affection for animals.B.His love for senior people.C.His care for disabled people.D.His devotion to protecting his children.25.Mahendra decided to do something for animals because of _.A.the death of a homeless sick dogB.his meeting with a sick dog one nightC.the encour
17、agement of Mrs GandhiD.his contact with the organization PFA26.In his effort to build the shelter, Mahendra _.A.spent much money hiring a landB.received little support from othersC.got a free land from a farmerD.was financially supported by the government27.What does the underlined word “crunches” i
18、n the last paragraph mean?A.Aids. B.Markets.C.Services. D.DifficultiesCUS scientists say they have poured cold water on the theory that washing hands with hot water kills more germs (细菌) than unheated water. The small study of 20 people found using water at 15C (59F) left hands as clean as water hea
19、ted to 38C (100F).National Health Service (NHS) recommends that people wash their hands in either cold or warm water. In this study, scientists at Rutgers University-New Brunswick wanted to find out if popular assumptions about the benefits of warm or hot water and official guidance on hot water giv
20、en to the food industry in the US held true. They asked 20 people to wash their hands 20 times each with water that was 15C (59F), 26C (79F) or 38 degrees (100F). Volunteers were also asked to experiment with varying amounts of soap. Before they started the tests, their hands were covered in harmles
21、s bugs. Researchers say there was no difference in the amount of bugs removed as the temperature of the water or the amount of soap changed.Prof Donald Schaffner said: “People need to feel comfortable when they are washing their hands but as far as effectiveness goes, this study shows us that the te
22、mperature of the water used did not matter.”However, the researchers accept their study is small and say more extensive work is needed to determine the best ways to remove harmful bacteria.In the UK, NHS experts say people can use cold or hot water to wash their hands. They say hands should be washe
23、d for at least 20 seconds and stress the importance of using enough soap to cover the whole surface of the hands. Their guidance focuses on rubbing hands together in various ways to make sure each surface of each hand is clean.28. What does the underlined phrase “poured cold water” in Paragraph 1 pr
24、obably mean?A. Proved. B. Contradicted. C. Created. D. Accepted.29. After they washed their hands with either hot or cold water, .A. volunteers all didnt feel very comfortableB. volunteers all talked about American food industryC. volunteers still had much germ on their handsD. volunteers nearly had
25、 the same amount of germ removed30. How do the researchers feel about their study?A. It is popular. B. It is convincing. C. It is incomplete. D. It is abstract.31. Which of the following is the best title for the text? A. Using Cold Water Instead of Hot Water. B. How to Use Cold Water to Wash Hands.
26、C. It Is Better to Wash Hands in Cold Water. D. Washing Hands in Cold Water as Good as Hot.DThe health of millions could be at risk because supplies of medicinal plants are being used up. These plants are used to make traditional medicine, including drugs to fight cancer. “The loss of medicinal plan
27、ts is a quiet disaster,” says Sara Oldfield, secretary general of the NGO Botanic Gardens Conservation International.Most people worldwide rely on herbal (药草制的) medicines which are got mostly from wild plants. But some 15,000 of the 50,000 medicinal species are under threat of dying out, according t
28、o report from the international conservation group Plantlife. Shortages have been reported in China, India, Kenya, Nepal, Tanzania and Uganda.Over-harvesting does the most harm, though pollution and competition from invasive species (入侵物种) and habitat destruction all contribute. “Businessmen general
29、ly harvest medicinal plants, not caring about sustainability (可持续性),” the Plantlife report says, “damage is serious partly because they have no idea about it , but it is mainly because such collection is unorganized.” Medicinal trees at risk include the Himalayan yew (紫衫) and the African cherry, whi
30、ch are used to treat some cancers.The solution, says the reports author, Alan Hamilton, is to encourage local people to protect these plants. Ten projects studied by Plantlife in India, Pakistan, China, Nepal, Uganda and Kenya showed this method can succeed. In Uganda, the project has kept a sustain
31、able supply of low-cost cancer treatments, and in China a public-run medicinal plant project has been created for the first time.”“Improving health, earning an income and keeping cultural traditions are important in encouraging people to protect medicinal plants,” says Hamilton, “You have to pay att
32、ention to what people are interested in.”Ghillean Prance, the former director of the Royal Botanic Gardens at Kew in London, agrees that medicinal plants are in need of protection. “Not nearly enough is being done,” he told New Scientist. “We are destroying the very plants that are of most use to us.”32. From t
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