题目
题型：0115 期中题难度：来源：
PALO AITO, California-" Switching off the television may help prevent children from getting fatter-even
if they do not change their diet or increase the amount they exercise," US researchers said last week.
A study of 192 third and fourth grades, generally aged eight and nine, found that children who cut the
number of hours spent watching television gained nearly two pounds (0.91 kg ) less over a one-year period
than those who did not change their television diet.
"The findings are important because they show that weight loss can only be the result of a reduction in
television viewing and not any other activity," said Thomas Robinson, a pediatrician (儿科专家) at Stanford
University.
" American children spend an average of more than four hours per day watching television and videos or
playing games, and rates of childhood being very fat have doubt over the past 20 years," Robinson said.
In the study, presented this week to the Pediatric Academic Societies" annual meeting in San Francisco,
the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to
one-third.
Children watching fewer hours of television showed a significantly smaller increase in waist size and had
less body fat than other students who continue their normal television viewing, even though neither group ate
a special diet nor took part in any extra exercise.
"One explanation for the weight loss could be the children unstuck to the television may simply have been
moving around and burning off calories," Robinson said.
"Another reason might be due to eating fewer meals in front of the television. Some studies have suggested
that eating in front of the TV encourages people to eat more," Robinson added.
B. children will get thinner if they eat less.
C. children will get fatter if they spend less time watching TV.
D. children will get fatter if they spend more time watching TV.
B. is less than four hours a day.
C. doubled in the last twenty years.
D. is more than on any other activities.
B. eight hours
C. three hours
D. one hour
B. Children usually eat more while watching TV.
C. Children eat the same amount of meals while watching TV.
D. Children usually eat nothing while watching TV.
B. They burn off fewer calories.
C. They change their diet while watching TV.
D. Both A and B
答案
核心考点
举一反三
copy. It charges libraries per book per copy and gives publishers a cut of the total income.
From the consumer"s (消费者) point of view, this means that if more than, say, five people want the latest
Danielle Steel romance novel, other people who request that book will get a message saying the title is
unavailable.
It"s a model many publishers seem to have embraced. More than 350 gave the company rights to hand out
their digital works, and McGraw-Hill Corporation and Houghton Mifflin Corporation have put money in the
company. The California public libraries and about 1, 800 others across the US are trying out the Net Library
service.
Some librarians criticize the New Library model. Stanford University librarian Michael Keller argues that the
company is creating an unnatural fear of digital works, which is contrary to the ideas of the Internet.
Keller and some other librarians argue for the e-book vision set forth by EBrary. EBrary is starting a service
that lets us users read books for free.
But it will charge about 25 cents a page when a person tries to print out material or copy and paste it into a
different file or tries to download a copy onto a computer.
Christopher Warnock, chief executive of EBrary, believes most consumers won"t want to buy entire books,
only the parts that interest them.
"There"s not really a lot of good in owning an electronic file and having to store it and manage it. It doesn"t
make sense," he said.
B. They share the money with the Net Library.
C. They get money by cutting the cost of the books.
D. They get the money from the readers.
B. held something tightly
C. disliked something badly
D. tried out something hard
B. enjoy the service of the Net Library
C. don"t like other people borrowing books
D. complain about the limited number of the new books
B. There is no need for consumers to have a whole book.
C. EBrary is not a good library for the consumers.
D. It"s reasonable to charge the consumers money for copying some pages.
Internet. However, you can also find many weather signs among wildlife, because of their highly developed
senses. Drops in air pressure (压力) produce an effect on small animals in many ways. Mice and deer are
good weather indicators. People who spend a lot of time outdoors have observed that, before a storm, field
mice come out of their holes and run around. Deer leave high ground and come down from the mountains.
Birds are especially good weather indicators because they also show the effect of a pressure drop in many
ways. For example, some birds become irritable (急躁的) and quarrelsome and will fight over a piece of bread.
Other birds chirp (叽叽喳喳) and sing just before a storm. It seems they know they won"t get another chance
for an hour or two. Birds also seek safe places before a storm. You will sometimes see birds settling in trees
or gathering together on a wire close to a building. Pre-storm low pressure makes the air so thin that birds
have difficulty flying.
It is unusual to see many birds flying overhead in the summertime, rather than during the periods in the
spring or autumn. Watch for other weather signs if you see this. If they fly in the wrong direction, they may
be flying ahead of a storm.
By paying closer attention to some important signs in nature, we can become better prepared for any kind
of weather.
B. services
C. signs
D. stations
B. fly in different directions
C. come down from tall trees
D. share a piece of bread
B. By noticing the change of wind directions.
C. By feeling a drop in air pressure.
D. By noticing the movements of other animals.
B. Drops in Air Pressure
C. Animals"Sharp Senses
D. Nature"s Weather Signs
hardly know a time when computers weren"t around, and they eagerly catch the chance to spend hours online,
chatting with friends, So what?
But researchers nationwide are increasingly worried that teens are becoming isolated (孤寂), less skillful at
person-to-person relationships, and perhaps numb (麻木) to the cheatings that are so much a part of the e-mail
world. "And a teen"s sense of self and values may be changed in a world where personal connections can be
limitless,"said Sherry Turkle.
Another researcher, Robert Kraut, said he"s worried about the "opportunity costs" (机会成本) of so much
online time for youths. He found that teens who used computers, even just a few hours a week, showed
increased signs of loneliness and social isolation. "Chatting online may be better than watching television, but
it"s worse than hanging out (闲逛) with real friends," he said.
Today"s teens, however, don"t see anything strange in the fact that the computer takes up a central place in
their social lives, "School is busy and full of pressure. There"s almost no time to just hang out." said Parker Rice,
17. "Talking online is just catch-up time."
Teens say they feel good about what they say online or taking the time to think about a reply. Some teens
admit that asking someone for a date, or breaking up, can be easier in message form, though they don"t want
to do so. But they insist there"s no harm.
B. nothing is wrong with teens"chatting online
C. teens can manage their social connections
D. spending hours online does much good to teens
B. improve their school work
C. develop an interest in social skills
D. reduce their mental pressures
B. teens" computer skills and school work
C. the effects of the computer world on teens
D. different opinions on teens" chatting online
B. draw attention to teens" computer habits
C. suggest ways to deal with problem teens
D. discuss problems teens have at school
阅读下面的短文和问题,根据短文内容,在相应题号后的横线上写下相关的信息(不多于五个单词),
完成对该问题的回答.答语要结构正确,书写工整,字迹清楚.
when writing book reports and stories, I use Microsoft Word instead of a pen and paper. That way, after my
teacher edits my work, I can go back and make revisions without having to rewrite the whole thing. And
Microsoft Word has a spell checks! I use it all the time.
For English class, we"re reading The Outsiders, by S.E.Hinter. As a pre-reading assignment, my teacher
asked us to research teenage groups on the Internet. I tried Google, Encarta, and Yahoo first, and finally
found an article on Time.com.
For a geography assignment on the United States, I used Encarta to learn about the Mississippi River. I
needed to find out how deep the river is, how its widths and depths are different, what states it runs through,
and what kind of fish live in it. I used the information to show how the geography of a country affects its
economy. For example, the river"s trade paths, the number offish caught in it, and the tourists it attracts
directly affect Southerners" jobs and incomes.
I never go to the library to do research. It takes too much time. Since I live in New York City and both
my parents work, getting to the library isn"t always easy. For a big assignment or research project, I"d have
to stay at the library to read, or sign out whatever books or magazines I needed. Being able to find the
information in my own living room makes everything a lot simpler. Online dictionaries and encyclopedias also
save time.
Sometimes. I think the computer spoils my generation because it"s so easy at least physically. But
computers are not like television, which does the thinking for you. You still have to use your mind. I prefer
using a computer. Easy, fun, and fast.
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2.Why does the writer never go to the library to do research?(本题1分)
______________________________________________________________________________________
3.What"s the writer"s opinion about using a computer?(本题2分)
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Did you ever wonder why the water level in a glass doesn"t change when the ice in the glass melts (融化)?
To find out why, you can use the scientific method. Used by scientists in various situations, the scientific
method is also a clear and logical way to solve many real-world problems, as the procedure below indicates.