Europe’s deadly outbreak of a rare form of E. coli bacteria (大腸桿菌) has brought new attention to food safety issues. One of the problems when people get sick from food is that the simplest question is often difficult or even impossible to answer. Just what did the people eat that made them sick?
Of course, one way to avoid these medical mysteries is to keep dangerous organisms out of the food supply. This is easier said than done, but scientists keep looking for new ways.
Scientists in the United States have developed an experimental system that uses a high-tech optical scanner. The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce. These can be sources of E. coli. E. coli bacteria naturally live in the intestines(腸) of humans and many animals. Most kinds of E. coli are harmless but some can make people sick.
The new scanner can also show damage and imperfections that might make the produce unappealing to shoppers.
Scientists designed the system at a Department of Agriculture research center in Beltsville, Maryland. Moon Kim of the Agricultural Research Service led the team.
MOON KIM: “We were requested, we were asked, to develop a method to detect contamination in produce. So we started with the apple as the model sample.”
The scanner uses a high-speed camera placed over the conveyer belt that moves the produce along. As the apples move along the belt, the scanner captures images of each piece of fruit.
Moon Kim says the team hopes the system will be available before long.
MOON KIM: “We are targeting for development in commercial plants for the next several years.”
The scanner can direct a sorting machine to separate the bad apples from the good ones. The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.
1.What is the main topic of the text?
A.Bacteria.?? B.A high-tech scanner.
C.A camera??? D.Food safety.
2.E. coli bacteria ______.
A.broke out all over the world????????????? B.comes from soil or animal waste
C.is extremely harmful to health????????????? D.does not cause illness
3.The high-tech scanner ______.
A.can help to sort out different fruits
B.make the produce appeal to shoppers
C.can only capture images of the whole apple
D.can identify the presence of contaminants
4.What can be inferred from the text?
A.The scanner needs to be improved.
B.The scanner will be available in the next several years.
C.Moon Kim is unwilling to develop the scanner.
D.The scanner is connected to a sorting machine.
1.B
2.B
3.D
4.A
【解析】
試題分析:歐洲一種罕見大腸桿菌的致命爆發(fā)引發(fā)了人們對食品安全問題的新的關(guān)注。在人們因為食品致病的一系列問題中,有一個最簡單的問題卻常常難于甚至無法回答,這就是,他們吃了什么導(dǎo)致生?美國科學家開發(fā)了一種使用高科技光學掃描裝置的實驗性系統(tǒng)。這種檢測系統(tǒng)針對于食品包裝上市環(huán)節(jié)。希望這個新科技能真的成為食品安全的福音。
1.主旨大意題。綜觀全文可知本文主要介紹了這種高科技的掃描儀,故選B。
2.細節(jié)理解題。根據(jù)contaminants(致污物) like soil or animal waste on fresh produce. 故選B。
3.細節(jié)理解題。根據(jù)The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce.該系統(tǒng)用于識別新鮮農(nóng)產(chǎn)品表面上的土壤或動物糞便等污染物,故選D。
4.推理判斷題。根據(jù)The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.這種掃描儀有待于提高,故選A。
考點:健康保健類短文閱讀。
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Climate change,pollution,overuse of water and development are killing some of the world’s most famous rivers including China’s Yangtze.India’s Ganges and Africa’s Nile.WWF said on Tuesday.At the global launch of its report “World’s Top 10 Rivers at Risk”,the group said many rivers could dry out. affecting hundreds of millions of people and killing unique aquatic(水生的)life.
“If these rivers die,millions will lose their livelihoods,biodiversity(生物多
樣性)will be destroyed on a massive scale,there will be less fresh water and agriculture,resulting in less food security,”said.Rayi Singh,secretary—general
of WWF—India.The report。launched ahead of“World Water Day”today,also
cited the Rio Grande in.the United States,the Mekong and Indus in Asia,Europe’s Danube, La Plata in South America and Australia’s Murray—Darling as in need of greater protection.
Rivers are the world’s main source of fresh water and WWF says about half of the available supply is already being used up.Dams have destroyed habitats and cut rivers off from their flood plains.while climate change could affect the seasonal water flows that feed them,the report said.Fish populations,the top source of protein and overall life support for hundreds of thousands of communities worldwide,are also being threatened, it found..The Yangtze basin is one of the most polluted rivers in the world because of decades of heavy industrialization,damming and huge influxes(流入)of seaiment(積淀)from land conversion.
Climate change,including higher temperatures,also means serious consequences for fishery productivity,water supply and political security in Africa’s arid Nile basin.Tributaries(支流)flowing into the Ganges are drying up because of irrigation,WWF said.
What does the text mainly about?
A.Saving fresh water in our life.B.How to protect our rivers.
C.An important discovery.D.World’s top 10 rivers are at risk.
We can infer from the text that _____.
A.rivers’dying out could affect food security
B.there are four Asian rivers mentioned in the passage
C.the Yangtze is polluted thanks to the lack of enough tributaries
D.higher temperatures couldn’t affect fishery productivity
WWF is probably a name of _____.
A.a(chǎn)n organization B.a(chǎn) newspaper C.a(chǎn) magazine D.a(chǎn) report
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1. The expression “catch on” in the passage may mean _________.
A. start B. cost a lot C. become popular D. dangerous
2. Before Columbus discovered America __________.
A. Europeans had smoked B. Nobody smoked in the world
C. Nicotine was not in tobacco D. Europeans had never smoked
3. In the nineteenth century smoking became popular because of the people in ________.
A. India B. Turkey C. the U.S. D. British
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Climate change,pollution,overuse of water and development are killing some of the world’s most famous rivers including China’s Yangtze.India’s Ganges and Africa’s Nile.WWF said on Tuesday.At the global launch of its report “World’s Top 10 Rivers at Risk”,the group said many rivers could dry out, affecting hundreds of millions of people and killing unique aquatic(水生的)life.
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Rivers are the world’s main source of fresh water and WWF says about half of the available supply is already being used up.Dams have destroyed habitats and cut rivers off from their flood plains.while climate change could affect the seasonal water flows that feed them,the report said.Fish populations,the top source of protein and overall life support for hundreds of thousands of communities worldwide,are also being threatened, it found..The Yangtze basin is one of the most polluted rivers in the world because of decades of heavy industrialization,damming and huge influxes(流入)of sediment(積淀)from land conversion.
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1.hat is the text mainly about?
A.Saving fresh water in our life. B.How to protect our rivers.
C.An important discovery. D.World’s top 10 rivers are at risk.
2.We can infer from the text that _____.
A.rivers’ dying out could affect food security
B.there are four Asian rivers mentioned in the passage
C.the Yangtze is polluted thanks to the lack of enough tributaries
D.higher temperatures couldn’t affect fishery productivity
3.The top 10 rivers are fast dying as a result of the following EXCEPT _____.
A.climate change B.wasting water C.pollution D.dams
4.WWF is probably a name of _____.
A.a(chǎn)n organization B.a(chǎn) newspaper C.a(chǎn) magazine D.a(chǎn) report
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Madrid Post House
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D.New Barcelona Hotel
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Jackson, Anna及兩個孩子,David, Bob一家,Black 夫婦都想尋找一家賓館。請閱讀他們的信息,然后匹配他們所要找的賓館。
_____ 56. Jackson wants to do several all-day hikes in the mountains during the spring.He is fond of a place with traditional decorations and superb(極好的)views.
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The days of Europeans relaxing in the cafe with a newspaper and a seemingly endless cup of coffee appear to be numbered.A new English expression is popular in Europe these days:“coffee to go.”
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D、the coffee is easy to take away
4.The characteristic of European coffee houses is .
A、“coffee to go ”as part of daily life
B、sitting in a cafe bar for several hours
C、having coffee slowly in a pleasant atmosphere
D、taking away coffee in a hurry
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