Your brain controls everything you do．It makes it possible for you to think，learn，create and feel；to blink （眨眼）and breathe and for your heart to beat﹣this fantastic control center is you brain．It is so amazing that a famous scientist once called it"the most complex （复杂）thing we have yet discovered in our universe"．
Can this small grey organ （器官），which weights less than one and a half kilos，really do so much？Amazingly，your brain contains about 100 billion neurons （神经元）﹣it would take you over 3000 years to count them all．Believe it or not，the activity in your brain never stops．Your neurons create and send more messages than all the phones in the world．And although one neuron creates only a little electricity，all your neurons together can producce enough electricity to power a light bulb （灯泡）．"
So exactly how fast does your brain work？Well，imagine this：a bee lands on your foot．Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour．Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly．These neurons can send this information at more than 320kilometers per hour．No computer has your brain's unbelievable ability to deal with the amount of information coming from your eyes，ears and other sensory organs．
But how does your brain allow you to learn things that you will use in the future？The structure （结构）of your brain changes every time you have a new thought，remember or learn something．For example，riding a bike seems impossible at first，but soon you are able to do it．How？As you practice，your brain sends"bike riding"messages again and again．Soon，the actions are learnt and Yuri are able to ride a bike easily from then on．
42．From the passage we know that neurons ．
A．receive messages very slowly
B．are only found in your skin
C．send messages to your brain
D．need electricity to work
43．In Paragraph 3，the writer mentions computers to ．
A．compare them with the human brain
B．show how fast they have become
C．say that computers have no abilities
D．ask people to use computers more
44．When you have a new thought， ．
A．your brain will power a light bulb
B．your heart beats faster
C．you remember something
D．the structure of your brain changes
45．The article is mainly about ．
A．all the steps when your brain learns things
B．what an unbelievable organ the human brain is
C．how the brain makes people smarter than computers
D．the things you can do to make your brain work faster．
We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.
When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration (迁徙) is probably the migration of fish, which is called “salmon”(蛙鱼). This fish is born in fresh(淡的) water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.
Recently, scientists have studied the migration of a kind of lobster (龙虾). Every year, when the season of the bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go. So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel. Most animals move from one place to another at a certain time to _______.
| A．enjoy warmer weather |
| B．find food more easily |
| C．find beautiful places |
| D．get away from crowded places |
The underlined word “There” in the second passage means “___________”.
| A．in cold water | B．in warm water |
| C．in salty water | D．in fresh water |
Why do the lobsters get into a long line to move?
| A．It’s a safe traveling way. |
| B．The weather is bad. |
| C．It is still unknown to us. |
| D．They just don’t want not to be too crowded. |
The passage is mainly about ________________.”
| A．the migration of animals |
| B．the migration of fish |
| C．the travel of animals |
| D．the secret of nature |
Have you felt annoyed when a cell phone (手机)rings during the class? Something must be done to stop this. Now in New York City, USA, a rule is carried out（执行） in schools. Students can’t even bring cell phones to school. Is it a good thing or not?
Anxious（焦虑的） parents say that cell phones are an important tool in holding New York City’s families together.
“I worry about it,” said Elizabeth Lorris Ritter, a mother of a middle school kid. “It’s necessary in our everyday life. We have a washing machine, we have running water, and we have cell phones.”
A number of Americans think cell phones connect them to children on buses, getting out from subways, walking through unknown places.
“I have her call me when she gets out school,” said Lindsay Walt, a schoolgirl’s mother. “No one in New York is going to let their children go to school without a cell phone.
What about the cell phone owners, the students? Most of the students said that cell phones were necessary and the cell phone was like an extra(额外的)hand or foot for them.
“I feel so empty,” said May Chom, 14. “There is also no way to listen to music on the way to school without my phone. It will be a really, really boring trip.”. Elizabeth Lorris Ritter is worried that ______________.
| A．students are not allowed to bring cellphones |
| B．students spend too much time in listening to music on the cellphones |
| C．students bring cellphones to school and they often ring during the class |
| D．no rule is carried out to stop students from bringing cellphones to school |
. ____________ American parents disagree with the rule that students can’t bring cellphones to school.
| A．Many | B．Some | C．Few | D．No |
May Chom likes to ______________.
| A．go to school without a cellphone |
| B．chat with her friends on the cellphone on the way to school |
| C．walk through unknown places with a cellphone |
| D．bring a cellphone to school |
This writer wants to tell us the __________ in carrying out the rule not
to use a cellphone in school.
| A．importance | B．problem | C．happiness | D．impossibility (不可能) |
There would be a school party on Friday evening. The girls were talking about what they were going to wear.
“I’m going to wear a black dress, so everybody will notice me,” said Emily. “How about you, Linda?”
“I’m not sure. Maybe jeans, an old shirt, and a hat. People will notice me more than you!” Linda said.
“What are we going to do about the boys?” asked Jane. “Do you remember the last school party, last year? They just stood there, and we girls had to dance by ourselves!”
“I hear that some of the boys learned how to dance this summer. Maybe it’ll be better
this time,” said Mary.
The party was held on Friday evening. Groups of students arrived. The music began. The girls stood in a line on one side, and the boys on another side. Mr. Green, their teacher, tried to get them together, but failed. After a while, Tim said, “I don’t want to stand here the whole time. The party is only for two hours. It’ll be over soon.” He started to dance. All the others watched him. Then David asked Emily if she wanted to dance. Then Jack and Linda. Then, all began to dance. Soon there were more dancers than watchers.Before the school party, the girls were mainly discussing __________.
| A．the dance at the party |
| B．the teacher at the party |
| C．the dresses they would wear at the party |
| D．the boys at the party |
The girls wanted people to _________.
| A．buy them some dresses |
| B．teach them how to dance |
| C．notice them |
| D．invite them to the school party |
. The teachers tried to ___________.
| A．invite the girls to dance |
| B．play music instead of dancing |
| C．get the girls and boys to dance alone |
| D．get the girls and boys to dance together |
The party was ______________ last year.
| A．better than | B．not so good as |
| C．as good as | D．as bad as |
阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳答案。
A
“Three Little Cows” is ___________.
| A．the name of a zoo |
| B．the name of a movie |
| C．the name of a restaurant |
| D．the name of a party |
When are great drink specials and half price pizza offered?
| A．On Monday and Friday, 3-6 pm. |
| B．From Monday to Friday, 3-6 pm. |
| C．On Wednesday, 6-10 pm. |
| D．At any time. |
From 6 pm to 10 pm on Wednesday, customers can __________.
| A．have free wine |
| B．make a bottle of wine |
| C．pay $10 less for the wine |
| D．have wine for only $10 |
When you get tired of homework, several minutes’ walk in a nearby green park helps you relax at once. Or you may stand facing the lake or the sea. They’ll calm (not to be excited or nervous) you just like the green plants.
Wonder why? Color is a key part of the answers. Since it is so, green and blue help make people feel more quiet and safe.
All colors have special power. Scientists have found that many colors have specific effects (效果) on people’s minds and feelings.
Try an easy and interesting experiment and you’ll see how color “misleads” you sometimes. Wrap (包装) two boxes of the same size with colored paper, one red and the other white. Then weigh the two boxes with your hands. Which one is heavier? Most people will think that the red box is heavier, even though they weigh the same.
Colors can affect (影响) learning. Scientists have found that students spend more time reading if they read information written in blue text. Blue helps most people calm down and think more.
Smart (clever) uses of colors in daily life are to be seen everywhere. Hospital and libraries seldom (很少) paint their walls, tables and desks red. They use light colors, like light blue or green. Red makes people excited while light colors help them relax. Haven’t worked out how color affects your daily life? Start with your small room. Try to make some changes in it and you’ll get to know how important color is!The underlined word “misleads” means ______
| A．affects |
| B．effects |
| C．causes someone to have a wrong idea |
| D．give wrong directions |
We’d better paint the walls of the hospital in ______
| A．light blue or light green |
| B．deep red or deep brown |
| C．deep orange or deep red |
| D．light green or light yellow |
If you want to _______, you’d better sit in the room painted blue.
| A．weigh something with your hands |
| B．study attentively |
| C．face the lake or the sea |
| D．enjoy some rock music |
Which of the following is NOT true?
| A．When you are going to have a rest, you’d better sit in the room painted green |
| B．Scientists have known some differences among some colors |
| C．When you get tired of homework, you should look at the green plants far away |
| D．The passage has told us clearly why some colors are warm and other are cool |
The reading mainly shows us _____
| A．the difference between red and white. |
| B．how to get on well with others |
| C．how to make smart uses of different colors in our daily life |
| D．how to paint and decorate our rooms |
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