题目
题型：北京模拟题难度：来源：
suffer when we try to get by with too little shuteye. So it"s fortunate that our bodies do such a good job
of waming us when it"s time to hit the sack.
Like humans, other animals also take time out to rest. You"ve probably seen a lion dozing at the zoo,
or maybe watched our dog snooze away lying in its bed. In fact, sleep is a necessity for every animal that"s
ever been studied.
How long animals sleep, though, varies widely. Elephants and giraffes sleep only about 2 to 4 hours a
day, while bats may nod off for up to 20 hours. Ducks sleep together, and the birds on the edge of the group
sleep with the outside eye open and half of their brain awake-probably to keep watch while the other half of
their brain snoozes. Some birds may even sleep while flying. The fact that all animals make time for sleeping,
even under very dangerous situations, suggests that sleep is very important. And indeed, some facts suggest
that sleep is important for leaming and forming permanent memories.
But sleep may also be primarily a way for animals to save energy and stay out of harm. This may help
explain why meat-eating creatures sleep more than herbivores, which are animals that live only on plants.
Herbivores, like cows and zebras, need to spend more time searching for and grazing on food than meat eaters
do, such as lions and other big cats. So a big cat might be better off sleeping for a while after it eats, rather
than prowling around and risking injury.
But that"s just a guess. Scientists need to study other animals as well before they can fully understand the
benefits (好处) of sleep and know which benefits are most important for a particular species (物种).
One thing is certain: enough sleep is important to health and learning. So give in when a strong wish to
sleep hits, and catch plenty of ZZZs.
B. to drink something
C. to get up
D. to go to sleep
B. if you want to sleep in class, fall asleep immediately
C. you are easy to give in if you have plenty of sleep
D. if you have a strong wish to sleep, you are perhaps ill
B. how animals sleep in the open air
C. why animals need sleep
D. when animals feel sleepy
答案
核心考点
试题【阅读理解。 Growing kids need sleep, as do people of all ages. Indeed, research sh】；主要考察你对教育文化类等知识点的理解。[详细]
举一反三
buy a book that was just published. The first printing of 1250 copies sold out on the first day.
The popular book was The Origin of Species (《物种起源》) by British naturalist Charles Darwin (1809-
1882). In the book, Darwin argued that different forms of life could change over time because of natural
selection. This means that only those who are best suited to their environment will live and reproduce. Darwin
supported his arguments with examples he found during his around-the-world trip in the 1830s.
The book laid the foundation of modern biology. It changed how other scientists understood the appearance
of life on Earth.
A hundred and fifty years later, Darwin"s theory (理论) of natural selection still has great influence in the
world of science. But some people have a question: since medicine and modem life have made people healthier,
are we still evolving (进化) by natural selection?
The answer is yes,according to Stephen Stems and his team of Yale University researchers. They did a
study on 2 238 women in the US. They found that shorter,heavier women have more children than thinner,
taller ones. This trend (趋势) runs among their female children and grandchildren. So if this continues, women
in 400 years will be about 2cm shorter and a kilo heavier.
Stems" findings are supported by other scientists. For example, John Hawks at the University of Wisconsin,
US and his team believe they have found nearly 2000 gene variations(基因变异) in modem humans. Those
variations allow people to drink milk, fight disease and improve brain development.
_______________________________________________________________
2. When was the book published?
_______________________________________________________________
3. What does natural selection mean?
_______________________________________________________________
4. Why does the writer introduce Stemns" findings in the passage?
_______________________________________________________________
5. Why is Darwin"s theory of natural selection important?
_______________________________________________________________
空白处，使短文完整、通顺。一词只用一次，一空限填一词。方框中有两个词是多余的。
get help right away before you fall behind.
Your 1_____ are often a great place to start if you need help. Talk about your problem with them. They
might be able to 2_____ you how to do a difficult math problem or help you think of a topic to write about
for English class. They also can be helpful by finding that perfect place in the house for you to do your
homework and keeping supplies, like pencils, on hand. They also can cut down on distractions (分心的事)
like 3_____ younger brother and sisters!
Teachers are also important to you because they can give you advice about the assignment (作业) you
are 4_____ trouble with. They also can help you set up a good system for writing down your assignments
and remembering to put all necessary books and papers in your backpack. Teachers can give you study tips
and offer ideas about how to 5_____ with homework. Helping kids learn is their job, 6_____ be sure to ask
for advice.
Many schools, towns and cities offer after-school 7_____ to kids. They often help kids with their
homework and organize kids to 8_____ in different kinds of activities. There, you will not only be able to get
some help from adults, but also from other kids.
You can also use the Internet to 9_____ online homework help sites. These sites can lead you to good
resources (资源) for research and offer tips and guidance about many 10_____. But be careful about just
11_____ the information from an Internet website. Talk with your teachers about bow to use the resources
properly.
they are all lovely and lively. And it"s so interesting to watch them speak like a grown-up. But as they grow,
these same kids seem annoying and ill-mannered if they try to be a grown-up.
Conflicts (矛盾) go between parents and children. It"s hard to tell who are right and who are wrong. A
child of 7-8 always finds some reasons to have a conflict with it"s parents. Whether it is about some toy,
studies, a party or a company, there is always a difference between them. And it becomes worse when they
answer you back. Scientists tell us that children should be treated with care. Yes, sure they should respect
their elders.
We are partly responsible (有责任的) for this. At an early age we encourage children to behave like adults,
just because we find it funny. The kids on the other hand consider this same behavior as normal and get used
to it. And when it is not funny for us any more, we expect them to stop it, but by then it is already too late.
Only when they reach a certain maturity will the children realize that answering back and being rude are not
acceptable (可接受的). Until then, most of the time their behavior is difficult to change, unless by force
(暴力). And use of force is against the every good idea, as it weakens the child"s confidence.
So it is one thing to bring a child into this world but quite another to make them into well mannered
citizens. The best way is to be a good example ourselves, as our children are the mirrors of us adults.
B. Toddlers
C. Kids
D. Grown-ups
B. parents and children
C. parents and toddlers
D. parents and parents
B. 阶梯
C. 知识
D. 成熟
B. Being rude.
C. Using force.
D. Respecting elders.
B. Children can not change their behavior.
C. Children"s behavior develops in their own way.
D. Children"s behavior is not acceptable.
B. to give examples on educating children
C. to show the growth of children
D. to show the behavior of children
(海啸), which killed more than 10,000 people in areas along the coast. Several nuclear plants (核电站) at the
coast were broken by the earthquake and tsunami. People living near the plants have been asked to move away.
People living within 30 kilometers of the first plant are asked to stay indoors and close all windows.
The breaking of the nuclear plants is causing electricity shortages (电力短缺) in Eastern Japan. As a result,
electricity is cut off for 3-hour periods in the area of Tokyo and some other areas during daytime. In order to
save electricity, some shops, restaurants and tourist places in the areas are closed for some time every day. But
all major airports and train lines are still open and operating.
For the above reasons, tourists are advised not to visit the eastern areas in the near future. Visits to Western
Japan are not affected by the event. People who plan to travel over the coming weeks and months are advised
to pay attention to the situation for a few more days before making decisions.
B. traveler
C. story writer
D. news reporter
B. several nuclear plants had been broken
C. there were serious electricity shortages
D. their houses were washed away by the tsunami
B. avoid more people getting together
C. rebuild their broken buildings
D. keep away from nuclear radiation (核辐射)
B. invited
C. told
D. met
B. The earthquake happened after the tsunami.
C. There was no electricity in Eastern Japan.
D. People were not allowed to visit Western Japan.
found that the number of large fish has dropped by 90 percent in the past fifty years. The study took ten years.
The researchers collected records from fishing businesses and governments around the world. The magazine
Nature published (发表) the findings.
The scientists say the common way called longline fishing is especially harmful to large fish. This way
includes many fishing lines that are connected (连接) to one boat. If these lines are joined together, they can
reach one hundred kilometers. They hold thousands of sharp metal hooks (钩) to catch fish. Longline fishing
is especially common in the Japanese fishing industry. Records showed that Japanese boats used to catch about
ten fish for every one hundred hooks. The study says longline fishing boats now might catch one fish per
hundred hooks.
The scientists say business fishing can destroy groups of fish much faster than in the past. It"s not the only
worry that the number of large fish is becoming smaller and smaller. What"s worse, they are smaller in size than
their ancestors (祖先).
What is happening to ocean fish?