题目
题型:期中题难度:来源:
jumping funnel (漏斗) passes over a house, the walls and ceiling burst apart as if a bomb had gone off inside.
This explosion (爆炸) is caused by the low air pressure at the center of a tornado.
The pressure at the center of a tornado is usually 13 pounds per square inch. However, inside the house
the air pressure is normal, about 15 pounds per square inch. The difference of 2 pounds per square inch
between the inside and outside pressure may not seem like much. But suppose a tornado funnel passes over
a small building that measures 20 by 10 by 10 feet. On each square inch of the building, there is 2 pounds of
pressure from the inside that is not balanced by air pressure outside the building. On the ceiling, that adds up
to an unbalanced pressure of 57,600 pounds. The pressure on the four walls adds up to 172,800 pounds.
If windows are open in the building, some of the inside air will rush out through them. This will balance
the pressure inside and outside the building. But if the windows are shut tightly, the great inside pressure may
cause the building to burst.
Unfortunately, heavy rain happens in thunderstorms that later produce tornadoes. So, people often shut all
windows to protect their property. This may cause far worse damage later.
B. When tornadoes usually occur.
C. How tornadoes can be prevented.
D. Why tornadoes cause so much damage.
B. air pressure at the center of a tornado is over 172,000 pounds
C. weight of a tornado can crush a building"s roof when it passes overhead
D. air pressure inside a tornado is less than the air pressure inside a building
B. opening the windows
C. using an electric fan
D. making the roof and walls stronger
答案
核心考点
试题【阅读理解。 Force other than damaging winds are also at work inside tornadoes (龙卷风). S】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
will be graduating from high school, the commitment (承诺) you made to complete your schooling has been
fulfilled. Another few years in some college classroom just doesn"t sound too attractive; so what are your
choices? Let"s see, Choice 1-You can live with your parents, leech on to them, and basically do nothing. Or
Choice 2-You could get yourself a job. Of course, there are other choices, but for this little discussion, we"ll
just suppose that they aren"t relevant.
Okay, so Choice 2 is obviously going to be more productive. You"re finally into the workplace and will be
entering the real world. What would be a good place to start? Well, hopefully high school helped to give you
some sort of an idea of what type of job you would like to enter. If not, then it would be a good idea to speak
with an advisor or a person working in the field you may be interested in before you jump into a job that you
won"t like. Gaining knowledge on a particular line of work beforehand can be very effective by helping you in
your search to find that job that you will enjoy doing. Another reason to research jobs and get some hands on
work is related to the fact that it will also be helpful in buffing up your resume and providing you with some
valued experience. Internships (见习) or volunteering are usually a good place to start.
If you are ready to begin a job after high school, the main benefits will clearly be saving money from high
college expense and happily making a living in your chosen jobs. From another point of view, jumping into the
workplace is sometimes the only way to see for yourself if you are ready to work a 40-hour week yet. If you
decide that full time work is not what you are ready for, then this may suggest that you should go back to
school and get a degree. Besides, a college degree will usually equal higher wages.
B. depend on
C. quarrel with
D. take care of
B. Where Should I Start
C. The Advantage of Starting Work Earlier
D. Jumping into Work after High School
B. making sure if you are really ready to work
C. getting higher wages
D. getting to know if you should go back to school
B. Experience in work.
C. Advice from teachers and parents.
D. Internships and volunteering.
B. college graduates
C. high school graduates
D. graduating high school students
为多余选项。
your teen is under stress, how can parents help your teen stay calm before an exam?
Be involved. Parents need to be involved in their teen"s work. 1_____ What they look for is your patience-
to talk, to cry, or simply to sit with them quietly. Communicate openly with your teen. Encourage your teen
to express her worries and fears, but don"t let them focus on those fears.
Help them get organized. 2_____ Together, you and your teen can work out a timetable in which she can
study for what she knows will be on the test.
Provide a calm setting. Help your teen set up a quiet place to study and protect her privacy. Give them a
nutritious diet. It is important for your teen to eat a healthy, balanced diet during exam times to focus and do
her best. 3_____ If this happens, encourage your teen to eat light meals or sandwiches.
4_____ Persuade your teenager to get some sleep and/or do something active when she needs a real break
from studying. Help your teen balance her time so that she will feel comfortable taking time out from studying
to spend time with friends or rest.
Show a positive attitude. 5_____ Your panic, anxiety and blame contribute to your teen"s pressure. Make
your teen feel accepted and valued for her efforts. Most importantly, reassure your teen that things will be all
right, no matter what the results are.
B. The best thing is simply to be there.
C. They will only make the situation worse.
D. Exam stress can make some teens lose their appetite.
E. A parent"s attitude will affect their teen"s emotions.
F. Your teen may also make negative comments about themselves.
G. Help your teen think about what she has to study and plan accordingly.
But what are you going to do with your old computer?
In the past consumers have often paid high prices for their old computers, but how much do you think
these computers are worth now? Few people want to buy a computer which has become out-of-date or has
been replaced by a newer mode. Unfortunately, the only thing you can do with a computer which you have
had for five or six years is to throw it away with your other garbage.
What do many people do when they try to sell their old computers? Foolishly, they take into account its
original cost and then reduce the price according to the age of the computer rather like a second-hand car.
They forget that new computers are becoming cheaper every day, making old computers almost worthless.
In 1985, for example, a good computer cost over $4,000. Then years later its owner would be lucky to get
$ 400.
One well-known computer magazine recently made a list of 10 things to do with an old computer. One
suggestion was to give it away to charity or give it as one of the small prizes in a competition. The final
suggestion was to keep it in a safe place and hope that it would become a collector"s item in 15 or 20 years-
though the article in the magazine admitted that in 15 or 20 years, there may be so many old computers that
they will all be worthless.
B. No longer fashionable
C. Second hand
D. Worthless
B. to evaluate it and sell it
C. to donate it to the poor
D. keep it at home
B. 12
C. 5
D. 4
B. How Much Does An Old Computer Cost Now?
C. Your Old Computer
D. Useless Computers
B. People can get much money by selling old computers
C. You can get a used car at a very low price
D. To deal with old computers has became a common problem.
We can communicate on it. We can treat friends on it. We can buy and sell on it. We can do almost everything
on the Internet, and almost anywhere, anytime.
However, although the Internet provides services for us, it is silently getting our privacy (隐私) to some
degree. The services on most websites require our personal information. If we want to enjoy these services,
we have to provide much of our information, including our names, sex, addresses, telephone numbers and
sometimes bank accounts (帐户). Because weak network sometimes is unsafe, our information might be open,
stolen or sold. Even sometimes it will be used freely by others.
Considering (考虑到...) the above mentioned, you must pay attention to the safety when using the Internet.
First, when you need Internet service, you should always look through those big legal (合法的) websites.
Second, if the service requires important personal information, you should think twice before you type it in.
Third, store your own important card key (电子钥匙) and don"t tell others easily.
[ ]
B. look for jobs
C. chat with friends
D. give our friends" information to others
[ ]
B. some network isn"t safe so that our personal information is known or used by others
C. we have to enjoy the services of the Internet
D. using the Internet is a waste of time
[ ]
B. the name
C. the telephone number
D. the bank account
a. Surf the safe Web.
b. Think over and over before typing it in.
c. Don"t chat with friends on line.
d. Don"t use your key easily.
[ ]
B. b,c,d.
C. a,b,d.
D. a,c,d.
[ ]
B. Remember never use the ID card on the Internet.
C. Never use the Internet in the future.
D. Don"t believe others if you don"t know them.
uncomfortable. This is called the force of habits, and the force of habits should be fought against.
Habits, whether good or bad, are gradually formed. When a person does a certain thing, he is driven
by some unseen force to do the same thing repeatedly, then a habit is formed. Once a habit is formed, it
is difficult, and sometimes impossible, to get rid of. It is therefore very important that we should pay great
attention to the formation of habits. Children often form bad habits, some of which remain with them as
long as they live. Older persons also form bad habits as long as they live, and sometimes become ruined
by them.
There are other habits which, when formed in early life, are of great help. Many successful men say
that much of their success has something to do with certain habits in early life, such as early rising, honesty
and so on.
Among the habits which children should not form are laziness, lying, stealing and so on. They are all
easily formed habits. Unfortunately, older persons often form bad habits, which should have been avoided.
We should keep from all these bad habits, and try to form such habits as will be good for others and
ourselves. Remember: Habits cure habits.
B. form bad habits and easy for him to form good habits
C. get rid of bad habits and easy for him to form good habits
D. get rid of good habits and easy for him to form bad habits
B. a man can never get rid of the bad habits
C. we are forced to do them repeatedly
D. it"s hard and even not possible to get them away
B. Bad habits
C. Both good habits and bad habits
D. Neither good habits nor bad habits
B. is an early formed habit that is with one as long as he lives
C. is such a habit as will be kept from
D. is a habit that has something to do with success
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