摘要:2)E-shopping.when properly (do).can save us a lot of time and energy.

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Europe’s deadly outbreak of a rare form of E. coli bacteria (大肠杆菌) 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(肠) 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.
【小题1】What is the main topic of the text?

A.Bacteria. B.A high-tech scanner.C.A camera D.Food safety.
【小题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
【小题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
【小题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.

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
I live in Japan, where electronic items are a way of life, so it is no surprise that many students carry these little electronic dictionaries. E-dictionaries may be lighter and compacter (简洁的) than any paper dictionary.  【小题1】  However, to me, these are pretty much the limits to their advantages.
I think e-dictionaries should be limited in their use in classrooms. 【小题2】
E-dictionaries are much more expensive. In Japan, they cost as little as 10,000 yen(US$100)much as 40,000 yen, depending on how many functions you want (or think you want) and depending on how fashionable you are. My trusty Random House paper dictionary is copyrighted at1995, cost me a mere US$12.95 plus tax.
E-dictionaries are more fragile. Drop your paper dictionary. Go ahead. Hold it above your head and drop it. 【小题3】
E-dictionaries need batteries. Batteries are temperature sensitive. Batteries cost money, too.
E-dictionaries have keypads. Typing in the spelling of a word is harder and more time consuming than looking through pages and using the index at the top of each page.
【小题4】 Sound . Little devices beep (嘟嘟声) when you press the buttons, but it is very disturbing to some people in a classroom situation or library.
Finally, let’s consider making corrections or additions. No dictionary is perfect, paper version or electronic. However, when you find something you’d like to change in the e-dictionary, you can’t do anything about it. You can pencil in some notes with the paper type. Similarly, if you learn a word that isn’t in the dictionary, a few notes of a pencil make it easy to increase its memory capacity.  【小题5】And, for those students whose habit is to mark certain words with a highlight pen for ease of future reference, again, the paper dictionary wins out.

A.But it is impossible to do so with a keypad model.
B.They may even contain more words and expressions.
C. Let me add a statement about one that really troubles me.
D.Now, try this with any lightweight plastic e-dictionary, and you’ll be picking up the pieces.
E.That huge, heavy paper dictionary that you see in your library looks like a building block in size and weight.
F.E-dictionaries have advantages as well as disadvantages.
G.Let’s take a look at the following reasons.

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The Internet has changed the world we live in dramatically, so that in some ways it is unrecognizable from the place we lived in twenty years ago. Communications have been revolutionized. Not only have cell phones found their way into most people’s pockets or purses, but they are also used for next messaging and as cameras. Long distance phone calls have been replaced by e-mail and video conferencing. Communications, person to person or company to company, have turned into a fast-paced exchange with instant response. In fact, it has become more convenient and efficient.

         The other kind of communication the Internet provides is information. School children and medical researchers alike will tell you that they could not work without the Internet and its ability to connect them to any number of websites and databases of information. Many people do their banking on-line. Others plan a trip and book a flight for themselves. People do their own stock  trading through the Net. Sports fans follow scores and statistics on websites. Political junkies(政治狂) gather campaign statements and debate topics, even between elections. And almost everyone who owns a computer and has Internet access has bought at least one item on-line. No wonder some young people can not imagine what life was like before the Internet.

Some Advantages of the Internet

I.  1.     of the Internet communication

  ●A fast-paced exchange replacing long distance phone calls with    2.    like e-mail and vedio conferencing

II. Accessibitlity to the Internet information

  ●On-line    3.    service

     Convenience to do banking at home or office

  ●   4.    service

     Choices of booking traffic and accommodation

  ●Sports websites

     Information about scores and statistics

  ●Political websites

     Campaign statements and   5.   

 

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