revolution". On the farm of today, machines provide all the power.
One of the most important benefits will be the farm computer. A few forward-looking farmers
are already using computers to help them run their farms more efficiently. The computers help them
keep more accurate records so they can make better decisions on what crops to plant, how much
livestock to buy, when to sell their products, and how much profit they can expect. Many computer
companies have been developing special computer programs just for farmers. Programs are being
written for hog(猪) producers, grain farmers, potato farmers, and dairy farmers. In the future, farmers
will be able to purchase computer programs made to their needs. Because of the growing importance
of computers on the farm, students at agricultural colleges are required to take computer classes in
addition to their normal agricultural courses. There can be no doubt that farmers will rely on computers
even more in the future. While the old-time farm depended on horse power, and modern farms
depend on machine power, farms of the future will depend on computer power.
Another technological advance which is still in the experimental stage is the robot, a real "mechanized
hired hand" that will be able to move and, in some ways, think like a human being. Unlike farmers of
the present, farmers of the future will find that many day-to-day tasks will be done for them. Scientists
are now developing robots that will be able to shear(修剪) sheep, drive tractors, and harvest fruit.
Even complex jobs will be done by robots. For example, in order to milk their cows, farmers must
first drive them into the special barn(畜棚), then connect them to the milking machines, watch the
machines, and disconnect them when they are finished. In the future, this will all be done by robots.
In addition, when the milking is completed, the robots will automatically check to make sure that
the milk is pure. The complete mobilization of the farm is far in the future, but engineers expect that
some robots will be used before long.
B. The first sentence of the second paragraph.
C. The first sentence of the third paragraph.
D. The last sentence of the second paragraph.
B. whether to plant a certain kind of crop
C. whom to sell their livestock to
D. when to sell their products
B. Both computers and robots have been in use on today"s farms.
C. Farmers mainly use machines on their farms at present.
D. Farmers can do nothing without the help of computers on today
B. milking cows
C. most of the farm work
D. some house work
B. Farmers in the Future
C. Robots in the future
D. Revolution on the farm
Sometimes you"ll hear people say that you can"t love others until you love yourself. Sometimes you"ll
hear people say that you can"t expect someone else to love you until you love yourself. Either way,
you"ve got to love yourself first and this can be tricky. Sure we all know that we"re the apple of our
parents" eyes, and that our Grandmas think we"re great talents and our Uncle Roberts think that we will
go to the Olympics, but sometimes it"s a lot harder to think such nice thoughts about ourselves. If you find
that believing in yourself is a challenge, it is time you build a positive self-image and learn to love yourself.
Self-image is your own mind"s picture of yourself. This image includes the way you look, the way you
act, the way you talk and the way you think. Interestingly, our selfimages are often quite different from the
images others hold about us. Unfortunately, most of these images are more negative than they should be.
Thus changing the way you think about yourself is the key to changing your selfimage and your whole
world.
The best way to defeat a passive self-image is to step back and decide to stress your successes. That
is, make a list if you need to, but write down all of the great things you do every day. Don"t allow doubts
to occur in it.
It very well might be that you are experiencing a neg- ative self-image because you can"t move past
one flaw or weakness that you see about yourself. Well, roll up your sleeves and make a change of it as
your primary task. If you think you"re silly because you aren"t good at math, find a tutor. If you think
you"re weak because you can"t run a mile, get to the track and practice. If you think you"re dull because
you don"t wear the latest trends, buy a few new clothes. But remember, just because you think it doesn"t
mean it"s true.
The best way to get rid of a negative self-image is to realize that your image is far from objective, and
to actively convince yourself of your positive qualities. Changing the way you think and working on those
you need to improve will go a long way towards promoting a positive self-image. When you can pat(拍)
yourself on the back, you"ll know you"re well on your way. Good luck!
B. feel it hard to change yourself
C. are unconfident about yourself
D. have a high opinion of yourself
B. are probably untrue
C. are often changeable
D. have different functions
B. To make your life successful.
C. To understand your own world.
D. To change the way you think.
B. How to face challenges in your life.
C. How to build a positive self-image.
D. How to develop your good qualities.
B. Adolescents.
C. Educators.
D. People in general.
black holes! Astronomers last week discovered a pair of enormous black holes far out in the galaxy
that appear to be dancing toward each other. However, astronomers say the collision is not likely
to occur for several million years.
Black holes are objects in outer space that are so dense that nothing can escape their gravity.
They often sit in the center of a galaxy - like the Milky Way - and suck up everything near them.
The gravitational pull of a black hole is so intense that not even light (Which travels faster than
anything else in space) can make it past without being swallowed.
Black holes, like the one at the center of the Milky Way, are enormous. Scientists call some
of them "supermassive", because they can be a few million times the size of most stars. Their size,
their mass, and their inescapable gravity make black holes a giant force of nature in outer space.
Because there is no light near black holes, astronomers cannot actually see them; they are
completely invisible to us on the Earth. Scientists manage to detect the existence of a black hole
by watching what happens to other objects, or matter floating in space.
So how did scientists manage to get a good look at a region so faraway? The team used an
orbiting NASA observatory known as Chandra. This special observatory uses X-rays rather than
light to watch far out into space. Right before a star gets sucked into a black hole, it produces a large
number of X-rays.
B. It has extremely strong gravity.
C. It can suck up everything near them.
D. It is an enormous object in the galaxy.
B. Because Chandra can help them see black holes in X-rays.
C. Because Chandra was sucked into the black hole.
D. Because Chandra can resist the gravitational pull of a black hole.
B. How stars react when sucked into a black hole.
C. Black holes" swallowing up many nearby stars.
D. How black holes come into existence.
B. The location of black holes in the galaxy.
C. New clues about the beginning of the universe.
D. Nothing near a black hole can escape without being swallowed.
为多余选项。
Six Ways to Improve Reading Comprehension
Help your child keep what he reads --- a crucial skill, especially as he gets older and needs to
gain important information from textbooks.
Let him read aloud.
This forces him to go slower, which gives him more time to process what he reads. 1
Provide the right kinds of books.
2 He should recognize at least 90 percent of the words without any help. Stopping to figure
out a word makes it tough for him to focus on the overall meaning of the story.
3 To gain meaning from text, your child needs to read quickly and smoothly- a skill known
as fluency. Rereading familiar, simple books gives your child practice at decoding words quickly,
so he"ll become more fluent.
Talk to the teacher.
If your child is struggling strongly with comprehension, he may need more help with his reading-for
example, building his vocabulary or practicing phonics skills.
Supplement class reading.
If his class is studying a particular theme, look for easy-to-read books or magazines on the topic
. Some previous knowledge will help him get better prepared and make his way through tougher
classroom texts.
Talk about what he"s reading.
This "talking processing" helps him remember and think through the themes of the book. 4 . For
example:
Before: "What interests you in this book?"
During: " 5 . Is it turning out the way you thought it would?"
After: "Can you summarize the book? What did you like about it?"
A. Reread to build fluency.
B. Plus, he"s not only seeing the words, he"s hearing them, too.
C. What"s going on in the book?
D. Do you know all the characters" names in the story?
E. Make sure your child gets lots of practice of reading books that aren"t too hard.
F. He should recognize at least 90 percent of the words without any help.
G. Ask questions before, during, and after a reading session.
●Some scientists claim that we humans are the only living things that are conscious(有意识的)-we
alone are aware that we are thinking.
●No one knows ho w consciousness works-it is one of science"s last great mysteries.
●A11 your thoughts take place in the cerebrum (大脑皮质), which is at the top of your brain, and
different kinds of thoughts are linked to different areas, called association areas.
●Each half of the cerebrum has four rounded ends called lobes (脑叶)-two at the front (frontal and
temporal lobes) and two at the back (occipital and parietal lobes).
●The frontal lobe is linked to your personality and it is where you have your bright ideas.
●The temporal lobe is where you hear and understand what people say to you.
●The occipital lobe is where you work out what your eyes see.
●The parietal lobe is where you record touch, heat and cold, and pain.
●The left half of the brain controls the right side of the body. The right half controls the left side.
●One half of the brain is always dominant (in charge).
Usually, the left brain is dominant ,which is why 90 % of people are right-handed.
B. The temporal lobe.
C. The occipital lobe.
D. The parietal lobe.
B. Bright ideas come from the parietal lobe.
C. The occipital and temporal lobes are at the back of the cerebrum.
D. The occipital lobe is in charge of sound.
B. their temporal lobe is usually dominant
C. their right brain is usually dominant
D. their left brain is usually dominant
you were to try to learn how to write Chinese characters, you would find that they are not nearly as
difficult as you may have imagined. And they certainly qualify as forming one of the most attractive,
beautiful, logical(合乎逻辑的), and scientifically constructed(构造) writing systems in the world. Each
stroke(笔画)has its own special significance. If you are familiar with the rules of Chinese characters, you
will find it very easy to remember even the most complicated looking character, and never miss a stroke.
The earliest known examples of Chinese written characters in their developed form are carved into
tortoise shells and ox bones. The majority of these characters are pictographs. Archaeologists of various
countries have learned that most early writing systems went through a pictographic stage, as did the
Egyptian hieroglyphics. Most writing systems, however, eventually developed a phonetic(表示语音的)
alphabet to represent the sounds of spoken language rather than visual images observed in the physical
world.
One notable feature of Chinese characters is the "radical." "Radical" in English means "root". For
example, the characters yu "language," shuo "talk," i "discuss," "opinion," and lun "discuss" all share the
yen radical, which means "language," and gives the reader a clue to the meaning of the character as a
whole. The characters hsiu "rotten," shan "cedar," " t"ao "peach," and lin "forest," all contain the mu
"wood" or "tree" radical, indicating one of their shared key characteristics. If you know the radical of a
character, you can usually get a general idea of the meaning of the character it is a part of. Although there
is a theoretical total of almost 50,000 written Chinese characters, only about 5,000 of these are frequently used; and the total number of radicals is only 214. So learning to read and write Chinese is not nearly so
formidable a task as it may at first seem.
B. as difficult as you may have imagined
C. difficult to remember
D. scientifically constructed
B. Some strokes are more important than others.
C. There are rules in forming the Chinese characters.
D. Some writing systems eventually developed a phonetic alphabet.
B. the strokes of the Chinese characters
C. pictographs
D. the radical of the Chinese characters
- 1来到巴黎这个城市,你会看到用法文所写的“1871年5月21—28日公社的牺牲者”墙壁,它是为了纪念[ ]A、巴黎
- 2右图是一个网球沿竖直方向运动的频闪照片,由照片可知 ( )A.网球的加速度方向向上B.网球正在下降C.网球的加速度方向
- 3学校生物园有一块空地是锐角△ABC的形状(如图甲),面积为100平方米,BC=a米,AB=c米,且a>c.现在准备将这块
- 4某商店需要购进一批电视机和洗衣机,根据市场调查,决定电视机进货量不少于洗衣机的进货量的一半.电视机与洗衣机的进价和售价如
- 5如图所示是某物体的速度v随时间t变化的图象,在图示的4段时间中,外力对物体做正功的时间段是:A.0~t1B.t1~t2C
- 6已知0<β<<α<π,cos(-α)=,sin(+β)=,求sin(α+β)的值.
- 7已知两点A(1,2),B(3,1)到直线L距离分别是,,则满足条件的直线L共有[ ]A.1条B.2条C.3条D.
- 81989年世界卫生组织把铝确定为食品污染源之一,对在食品中的应用加以限制.按照这一要求铝在下列应用中应加以控制的是(
- 9体操运动员在上单杠之前总要在手上涂些镁粉,是为了 摩擦;而在杠上做回环动作时
- 10实验室可用于制取氧气的药品是[ ]A.空气 B.二氧化锰 C.高锰酸钾或过氧化氢 D.过氧化氢或二氧化锰
- 1跳高运动员为了取得好成绩,在起跳前总要先进行一定距离的助跑,然后起跳,助跑的作用是( )A.获得动能进而转化为重力势能
- 2染色体的主要成份是______和______.染色体中主要的遗传物质是______,它能______,并且控制_____
- 3设空间存在竖直向下的匀强电场和垂直纸面向里的匀强磁场,如图所示,已知一离子在电场力和洛仑兹力的作用下,从静止开始自A点沿
- 4- ?- S-U-E, Sue.[ ]A. Do you know Sue B. Can you
- 5载有货物的气球总重为2000牛,在空中竖直匀速下降时,所受浮力是1800牛,若要使它竖直匀速上升,至少应从气球上向外抛出
- 6用同一光电管研究a、b两种单色光产生的光电效应,得到光电流I与光电管两极间所加电压U的关系如图。则这两种光[ ]
- 7I remember __ to the seaside by my uncle when I was a child.
- 8 .
- 9若函数有4个零点,则实数的取值范围是______.
- 10判断镁条在氧气中燃烧是化学变化的依据是 [ ]A.发出耀眼的白光 B.生成白色粉末氧化镁 C.