题目
题型:0103 模拟题难度:来源:
to as the "at" symbol.
Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms
to describe the "@" symbol.
Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost
of something or how heavy something is. For instance, if you purchased 6 apples, you might write it as 6
apples "@" $1.10 each.
With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign"
separates a person"s online user name from his mail server (服务器) address. For instance,
joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on
keyboards in other countries that have never seen or used the symbol before. As a result, there is really no
official name for this symbol.
The actual origin of the symbol remains a mystery. History tells us that the @ symbol came from the
tired hands of the Middle Ages. During the Middle Ages before the invention of printing machines, every
letter of a word had to be copied with great efforts by hand for each copy of a published book. The monks
that performed these long, boring coping duties looked for ways to reduce the number of individual strokes
(笔画) per word for common words. Although the word "at" is quite short to begin with, it was a common
enough word in text and documents so that those monks thought it would be quicker and easier to shorten
the word "at" even more. As a result, the monks changed the shape of "t" into a circle to surround "a", thus
leaving out two strokes in the spelling "t".
B. How @ came into being.
C. How monks invented @.
D. How people wrote the cost of something.
B. The monks wanted to be quicker and easier with their copying.
C. The monks wanted to invent a new word.
D. Copying work was long and boring for them.
B. Kittly 163.com @ is an email address.
C. In countries where @ is used, governments have given it an official name.
D. It is likely to find the @ symbol on computer keyboards worldwide.
答案
核心考点
试题【阅读理解。 That little "a" with a circle curling around it that is found in E-ma】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
B: Well, so far progress has been rather slow. I haven"t learned the keyboard yet, and I have problems
remembering all the orders of editing. I get really impatient because I want to master the means to
operate the computer as soon as possible.
A: Just remember that Rome wasn"t built in a day. Word processing (文字处理) can"t be such an easy
matter.
B: You"re right. Our teacher keeps telling us that it takes time to learn all the techniques (技巧) of word
processing and that we can"t master everything in one day.
A: That" s entirely true. But you"ll catch on. Just be patient and practise whenever you can.
[ ]
B. are studying in the same class
C. are both learning word processing
D. are both tired of study
[ ]
B.Only step by step can we master something.
C. True friendship will benefit our progress.
D. Truth comes from practice.
[ ]
B. hardworking
C. friendly
D. impatient
[ ]
B. making progress
C. learning the keyboard
D. remembering all the orders of editing
注意:每空不超过3个单词。
you start using them again, they slowly become strong again. Everyone knows that. Yet many people do
not seem to know that memory works in the same way. When someone says that he has a good memory,
he really means that he keeps his memory in practice by using it.
When someone says that his memory is poor, he really means he does not give it enough chance to
become strong.
If a friend says that his arms and legs are weak, we know that it is his fault (过错). But if he tells us
that he has a poor memory, many of us think that their parents are to blame (怪责), and few of us know
that it is just his own fault.
Have you ever found that some people can"t write or read (blind people) but they have better memories?
This is because that they can"t read or write and they have to remember things. They cannot write them
down in a small notebook. They have to remember days, names, songs or stories, so their memories are
being exercised the whole time. If we want to have a good memory, we should practise remembering
things.
telephones that it is hard to imagine what life would be like without them. When there is a power failure,
people grope about in flickering candlelight, cars hesitate in the streets because there are no traffic lights
to guide them, and food spoils in silent refrigerators.
Yet, people began to understand how electricity works only a little more than two centuries ago. Nature
has apparently been experimenting in this field for million of years. Scientists are discovering more and more
that the living world may hold many interesting secrets of electricity that could benefit humanity.
All living cells send out tiny pulses of electricity. As the heart beats, it sends out pulses of record; they
form an electrocardiogram, which a doctor can study to determine how well the heart is working. The brain,
too, sends our brain waves of electricity, which can be recorded in an electroencephalogram. The electric
currents generated by most living cells are extremely small,often so small that sensitive instruments are needed
to record them. But in some animals, certain muscle cells have become so specialized as electrical generators
that they do not work as muscle cells at all. When large numbers of these cells are linked together, the effects
can be astonishing.
The electric eel is an amazing storage battery. It can send a jolt of as much as eight hundred volts of
electricity through the water in which it lives. (An electric house current is only one hundred and twenty volts,
but two hundred and twenty volts in China.) As many as four-fifths of all the cells in the electric eel"s body are
specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to length
of its body.
B. about 200 years ago
C. to be operating computers
D. by Thomse Edison
B. Electrical generators and animal muscle
C. Stones and dry wood
D. human brain and living cells
B. about one hundred and twenty volts
C. as high as the house current in China
D. stored in the water where it lives
B. we can always feel the electricity produced by living cells
C. human beings get their knowledge about electricity from nature
D. people learn about electricity from eels
diagrams, lotus flowers and clustering. As I used these exercises in my classes, I noticed that students were
interested. They said more and wrote more. They enjoyed expressing their ideas and sharing them in groups.
They were no longer passively waiting for the bell, but actively took part in the lesson. I find that creativity
can act as a way to increase participation and improve fluency (流利程度).
Creativity has become a popular word in recent years. Scholars in the arts, psychology (心理学), business,
education, and science are all working to get a deeper understanding of it. Robert J. Sternberg is a creativity
specialist and Yale professor of psychology. He defines creativity as "the ability to produce work that is both
new (original) and appropriate (applicable to the situation )". This definition is useful, as we want our students
to use language in a new way, and to use it correctly and properly. Most scholars say there are two types of
creativity: big "C" creativity and small "c" creativity. Big "C" creativity refers to genius level thinking that results
in artistic masterpieces and scientific breakthroughs. Small "c" creativity refers to everyday level thinking that
can be used in any situation. Our emphasis is on the latter. While it goes without saying that any of our
students could go on to be the next Picasso or Edison, our aim is to help students produce more ideas and use
language in new ways.
B. hoping to have a bell
C. expecting the end of the class
D. wanting to speak in class
B. useful
C. scientific
D. creative
B.creative in the sense of small "c" creativity
C.not creative in the sense of big "c" creativity
D.not creative in the sense of small "c" creativity
B. explain what creativity is
C. discuss how one can be creative
D. tell what teaching aims at
Portable electronics that can be carried about easily are only as good as their batteries (电池) and, let"s
face it, batteries aren"t very good, especially when compared with, say, petrol, which packs 100 times a
battery"s energy into an equal space. That"s why a large group of mechanical engineers (centered at the
Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at
work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When
the fuel runs out in your mobile phone, you just fill up and go.
The engine-about the size of a ten-cent coin-starts with a combustion chamber (燃烧室) that burns
hydrogen. Its tiny parts are etched (蚀刻) onto silicon wafers (硅片) in the same manner that computer
parts are etched onto integrated circuits (集成电路). The first engine is made up of five wafers. And since
these wafers could be produced in much the same way as computer chips, they could probably be produced
quite cheaply.
But the devil in all this nice detail is efficiency. Tiny engine parts don"t always behave like the bigger parts
of the first engine. Something between the parts can slow down the works, according to Columbia University
Professor LucFrechette, one of the engine"s designers. Extreme heat from the combustion chamber is also a
problem, often leaking to other parts of the engine.
The scientists" goal is to create an engine that will operate 10 times better than batteries operate. Frechette
says that a complete system, with all parts in place and working, will be set up in the next couple of years,
but commercial models aren"t likely until at least the end of the next ten years.
B. petrol will be used instead of batteries
C. the time of batteries will be gone forever
D. pollution problems caused by batteries must be solved
B. Advantage
C. Invention
D. Technique
B. The new engine has been produced in large quantities.
C. The new invention is much cheaper than the battery.
D. The new engine needs to be improved before it"s on sale.
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