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see and feel water coming from the atmosphere when we have rain. But the water must somehow get back
to the atmosphere. Meteorologists call this the water cycle.
There are many stages in the water cycle. Rain falls when water vapour in clouds condenses(凝结).
Drops of water form and fall to the ground. The water soaks into the ground and feeds streams and rivers.
A lot of rain falls into the sea. The heat of the sun evaporates some of the water in the ground and in the
rivers, lakes, and the sea. It changes the liquid water into water vapour. The vapour rises onto the air.
Water vapour is normally invisible. On a very damp or humid day, however, you can sometimes see
water v
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gets into the air from living things. Trees and other plants take in water throug
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212091019-75060.png)
water vapour from their leaves. People and land animals drink water and breathe out water vapour. In all
these ways the water returns to the air. There it gathers to form clouds and condenses to form rain. The
rain falls to earth, and the cycle starts again. It continues even if snow or hail(冰雹) fall instead because
both eventually melt t
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212091020-43966.png)
The air is more moist(潮湿) in the tropics(热带) than in the cold polar regions.
B. Water vapour.
C. How rain forms.
D. Water, vapour, rain.
B. Three.
C. Four.
D. Five.
B. how good your eyes are
C. in which way water is evaporated
D. climate or weather
B. there is more water vapour in the air in cold polar region than in the tropics
C. it gets more rain in the tropics than in cold polar regions because there is less vapour
D. the amount of water vapour in the air depends on how often it rains
feel hopless about it. Can you learn to read better, or must you agree that nothing can be done about it?
To be sure, people are different. You cannot expect to do everything as well as certain other people
do. If all the students in a class tried out for basketball, some would be very good players; others would be
very poor; and many would be in between. But even the very poor players can become much better player
s if they are guided in the right way, and with plenty of practice. It is the same with reading. Some seem to
enjoy reading and to read well without any special help. Others find reading a slow and tiring job. In
between, there are all degrees of reading ability.
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090915-46423.png)
Many experiments have shown that just about every poor reader can improve his reading ability. In
these experiments, the poor readers were given tests of reading ability. After some of the causes of their
poor reading were discovered, they were given special instructiong and practice in reding. After a few
months, another test of the same kind was given. In nearly all cases, these people had raised their reading
scores.
B. that there are differences in people’s abilities
C. why some people are good basketball players
D. that good basketball players can be g
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090915-15714.png)
B. take different forms of tests
C. have special help and practice
D. try different reading materials
B. almost all poor reders can make progress
C. causes of poor reading are difficult to find out
D. tests help people improve their reading ability
阅读理解。
Sure, it’s good to get along with your teacher because it makes the time you spend in the classroom
more pleasant.
And yes, it’s good to get along with your teacher because, in general, it’s smart to learn how to
relate to the different types of people you’ll meet throughout your life.
But really, there’s one super-important reason why you should get along with your teacher. When
you do, “learning bursts right open,” says Evelyn Vuko, a longtime teacher who writes an education
column called “Teacher Says” for the Washington Post newspaper.
In fact, kids who get along with their teachers not only learn more, but they’re more comfortable
asking questions and getting extra help. This makes it easier to understand new material and do your
best on tests. When you have this kind of relationship with a teacher, he or she can be someone to
turn to with problems, such as problems with learning or school issues, such as bullying(欺负人).
As a kid in a primary or middle school, you’re at a wonderful stage in your life. You’re like a
sponge(海绵), able to soak up lots of new and exciting information. On top of that, you’re able to
think about all this information in new ways. Your teacher knows that, and in most cases, is very
excited to be the person who’s giving you all that material and helping you put it together. Remember,
teachers are people, too, and they feel great if you’re open to what they’re teaching you. That’s why
they wanted to be teachers in the first place --- to teach!
Some kids may be able to learn in any situation, whether they like the teacher or not. But most
kids are sensitive(敏感的) to the way they get along with the teacher, and if things aren’t going
well, they won’t learn as well and won’t enjoy being in class.
1. In the passage, the teacher mainly talks about _____.
A. how to get along well with teachers
B. the importance of a good relation with teachers
C. how much the students are expected of to get along with teachers
D. how to make the time in the classroom more pleasant
2. “Learning bursts right open” in the third paragraph really means _____.
A. learning becomes easier for you at once
B. you find an opening to learning
C. there’ll be more problems with learning
D. there’ll be no problems with learning.
3. According to the passage, which of the following offers the best reasoning?
A. You are getting on well with your teachers, so you have more questions than others.
B. You find it comfortable to ask questions, so you can build a good relationship with teachers.
C. You have a good relationship with teacher, so you can turn to him/ her when in trouble.
D. You are in trouble, so you can build a good relationship with teachers.
4. Which of the comments is FALSE on teachers and their work according to the passage?
A. Teachers are exited even if you wouldn’t like to accept their teaching.
B. Teachers sometimes have the same feelings as students do.
C. Though few there are still some students who can learn even if they don’t like the teacher.
D. Having a bad relationship with your teachers does more or less harm to your studies.
remember their dreams. As soon as they wake up, they record what their dreams were about.
Scientists believe that we have different kinds of sleep. One kind is called R.E.M. R.E.M. stands
for rapid eye movement. During this kind of sleep our eyes move quickly, even though they are closed.
Although we are asleep, there are a lot of brain activities. We probably have dreams at this time.
Sometimes people talk in their sleep. In these dreams the dreamer is usually unhappy or worried
about something. The worst of the dreams are so frightening that we call them nightmares. In a nightmare
we often dream that we are being closed or that we are trapped in some way.
Scientists or others have written books about the meanings of dreams. The most famous of these
scientists was Sig
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090853-95301.png)
certain kinds of dreams. It is possible, however, that every dream has a special meaning only for the
person who dreams it, and that this dream about something is in that person"s life.
B. They are worried about something.
C. Their eyes are moving quickly.
D. Their eyes are moving slowly.
B. The meaning of dreams.
C. People and their dreams.
D. R.E.M. and sleep and dreams.
Let us suppose it is now about A.D. 2060. Let"s make believe(假设;虚构) it is about sixty years from now. Of course, things have changed and life is very different.
Voyages
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090823-59057.png)
hotels have been built. The hotels are air-conditioned, naturally. In order that everyone can enjoy the
beautiful scenery on the moon, every room has at least one picture window. Everything imaginable is
provided for entertainment(娱乐) of young and old.
What are people eating now? People are still eating food. They haven"t yet started to take on heir(继承) supply of energy directly as electrical current or as nuclear power. They may some day. But many foods
now come in pill form, and the food that goes into the pill
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090823-55969.png)
Since there are several times as many people in the world today as there were a hundred years ago,
most of
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destroyed by pests. The harvest is always good.
Farming, of course, is very highly developed. Very few people have to work on the farm. It is possible
to run the farm by just pushing a few buttons now and then.
People are now largely vegetarians(素食者). You see, as the number of people increases, the number
of animals decreases. Therefore, the people have to be vegetarians and we are healthier both in our bodies and in our minds, and we know the causes and cure of disease and pain, and it is possible to get rid of
diseases. No one has to be ill any more.
Such would be our life in 2060.
B. Many other animals.
C. Many plants.
D. A sea.
B. Foods in pill form.
C. Foods in water form.
D. Foods in gas form.
B. there are more pests
C. there is less water
D. the crops are getting better
B. Because doctors advise them not to eat meat.
C. Because the number of animals decreases.
D. Because all the animals have died of d iseases.
Stingrays are pancake-shaped fish, and you"d never guess it: they"re close cousins of sharks.The
smallest kinds are about the size of a dinner plate. But some 4-metre stingrays live in the waters near
Australia. About 170 different kinds of stingrays live in the oceans around the world. And some live
in freshwater too. In South America, a few kinds swim in the Amazon and other rivers that flow into
the Atlantic. One ocean kind, the Atlantic stingray, also
![](http://img.shitiku.com.cn/uploads/allimg/20191212/20191212090807-85910.png)
lives in the St. Johns River in Florida.
A stingray has a mouth and nostrils(鼻孔) on the bottom of its body. These nostrils are for smelling,
not for breathing. When water flows into a stingray"s nostrils, the fish may pick up the smells of creatures
it wants to eat. It can also find prey (牺牲者) by sensing the tiny amount of electricity that animals give
off. Slowly, slowly the fish hunts by moving along the ocean or river bottom. When it senses a worm,
clam, shrimp, or other creature, it flaps (拍打) its fins until the prey is uncovered. Then the fish lies down
over the prey, sucks it in, and crunches it with its small teeth. A stingray"s flat shape helps it hide. It stirs
up a cloud of sand by flapping its big, flat fins. When the sand settles down over the fish, everything is
covered but its eyes, breathing holes, and sometimes its tail. Its tail gave the "sting" to a stingray"s name.
When a stingray is attacked by an enemy, it whips its tail around. Then a sharp stinger releases a powerful poison into the enemy. When stingrays are on the ocean bottom, it"s easy for a diver to step on one by
mistake. Then the fish usually stings the person in the ankle. The poison is very painful, and the wound
may hurt for a day or two. Worse yet, pieces of the stinger can break off and infect the ankle. But
stingrays don"t chase after prey or people to sting them. In fact, divers can swim among friendly stingrays
without getting hurt.
B. To give readers facts about an interesting fish.
C. To warn readers about dangers in the ocean.
D. To teach readers how fish hunt their prey
B. can cover themselves with sand
C. move slowly above the ocean floor
D. live in freshwater as well as in oceans
B. To escape from the prey.
C. To find the prey.
D. To frighten the prey.
B. Pieces of the stinger come loose in the wound.
C. Electricity from the stinger shocks the wound.
D. Fins beside the stinger throw sand into the wound.
- 1A bullet was shot out of the dark cold hole of the rifle and
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- 3如右图,阴影部分的面积是 ( )A.B
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- 5科学是美的.一位同学将生活中水的物态变化写成一首优美的小诗:“晶莹的冰/缥缈的雾/凝重的霜/轻柔的雪/同样的水分子/装点
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- 6【题文】设集合M={ x | x2+3x+2<0},集合N={ x |≤4},则M∪N为A.{x | x≥-2}B.{
- 7设变量x,y满足约束条件,则目标函数z=2x+3y的最小值为 [ ]A.6B.7C.8D.23
- 8分式,,的最简公分母是( )
- 9(1)温度计是实验室常用的工具,它是根据液体的___________原理制成的。 根据图所示测量液体温度的操作情况,提出
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