We’re surrounded by chemistry in everyday life. Sometimes it is easy to see, like when your science teacher does a big experiment in class. At other times, it can be pretty hard to see everyday chemistry at work, but nearly everything you touch or use has some element of chemistry in it.
Something as simple as toothpaste contains at least three chemicals, if not more. It is the mixture of them and its chemical reaction that keeps your teeth clean. Other things you use every day are created by chemistry, such as hair products, shampoo and soap. Adding detergent (洗涤剂) to water involves chemistry. Without chemistry, we would never have known that we need soap to get the oil out of clothes or skin. Chemistry not only helps us make products for use, but it also helps us understand the world around us. Chemistry helps us understand what the ozone layer (臭氧层) is and how it protects us. Chemistry also gives us sunscreen to protect us from the sun. Thanks to chemistry, we know bleach (漂白剂) can’t be mixed with vinegar(醋), because it can produce poisonous gas.Without chemistry, we wouldn’t have fireworks displays on important days.
Chemistry plays a big role in food preparation. Cooking food causes it to go through a chemical change. That is why cooked food often tastes different from raw food. Baking is a great example of chemistry. Too much or too little of any ingredient（成分，尤指烹饪） makes a difference to the result of baking, for example, the dough (面团) won’t rise or the cake will be flat.
Chemistry isn’t something that just lives in a lab; it’s something that you meet hundreds of times every day. Knowing how chemistry works will give you a greater understanding of the science behind some of the simplest-looking things.
【小题1】What’s the main idea of Paragraph 1?

B?
Wild animals seem to have escaped the Indian Ocean tsunami (海啸), adding weight to the idea that they possess a “sixth sense” for disasters, experts said on Thursday. Sri Lanka wildlife officials have said the giant waves that killed over 24,000 people along the Indian Ocean Island’s coast seemingly missed wild beasts, with no dead animals found. ?
“No elephants are dead, not even a dead hare or rabbit. I think animals can sense disaster. They have a sixth sense. They know when things are happening,” H.D. Ratnayake, deputy director of Sri Lanka’s Wildlife Department said on Wednesday. ?
The waves washed floodwaters up to 3 km (2 miles) inland at Yala National Park in the southeast, Sri Lanka's biggest wildlife reserve (自然保护区) and home to hundreds of wild elephants. “There has been a lot of evidence about dogs barking or birds migrating before volcanic eruptions or earthquakes. But it has not been proved,” said Matthew van Lierop, an animal behaviour specialist at Johannesburg Zoo. “There have been no specific studies because you can’t really test it in a lab or field setting,” he said. ?Other authorities agreed with this conclusion. “Wildlife seems to be able to pick up certain phenomenon, especially birds. There are many reports of birds detecting coming disasters,” said Clive Walker, who has written several books on African wildlife. ?
Animals certainly rely on the known senses such as smell or hearing to avoid danger such as predators(食肉动物). The idea of an animal’s “sixth sense” is a lasting one that the evidence on Sri Lanka’s damaged coast is likely to add to. ??
60. This passage is mainly about  _____.?
A. the damage that was caused in the Indian Ocean tsunami?
B. why animals can save themselves from natural disasters?
C. how to protect the wildlife when disaster happens?
D. the different opinions about animals’ natural power ?
61. Which of the following is true according to the passage??
A. It has been proved that animals have a sixth sense.?
B. Research has been made on the special movements of animals before disasters.?
C. It’s generally considered that animals can sense the coming of disasters.?
D. It can be tested that animals have the known sense to escape from the disasters.
62. What does the term “sixth sense” in the passage mean??
A. It is the natural ability of animals that can’t save them from danger.?
B. It is the animal’s imagination in the brain.?
C. It is some hidden power to say in advance that something will happen.?
D. It is a kind of sense that is the same as smell or hearing. ?
63. Which section does the passage most probably appear in a newspaper??
A. Entertainment.   B. Discovery.   C. Future.   D. Culture. ?

I became lame（瘸的）in both legs in my childhood. I can’t stand   36  the support of two sticks. Only in my wheelchair can I “   37  ”.
I still remember the first day at   38 . When I appeared at the door, 39   in the classroom stared（凝视）at me in   40 . My face turned   41 . I couldn’t help  42 back. It was the    43  and sympathy（同情）in their eyes that   44  me doing so. I went shyly towards an unoccupied (空的) seat.
Being lame, I didn’t dare (敢) to   45  in front of my classmates. I was afraid that I might be   46  at. In those days I was very sad to see others walking   47 .
One day, a few students came up to me and asked me to go outside. I was really   48 . They encouraged me with a(n)   49  smile and   50  me in my wheelchair from place to place. I was   51  to them for giving me a chance to see the   52  of our lovely school with my own eyes.
After that we often read, played and talked together. My friends are always   53   to help me. It made me   54  I am handicapped (残疾的).
Once they asked me, “What is the most beautiful thing in our school?” Without hesitation (犹豫) I said, “It is the   55 . ”

Learning to drive is important to the independence of teenagers, but it is also a great responsibility．Although having a law that keeps 16-year-old drivers from having more than one teenager in the car with them at first seems unfair, there are convincing reasons for this requirement．
The Insurance Institute for Highway Safety reports that teens are four times more likely than older drivers to be involved in an automobile accident．It also reports that 16-and 17-year-old drivers are twice as likely to have an accident if they have two teenage friends in the car and four times as likely to have one if they have three or more teenage friends in the car with them．Fatal （ 致命的） crashes of 16-year-old drivers involve the highest percentage of speeding, driver error, and number of passengers．This information is enough to cause any reasonable person to wonder about the wisdom of allowing new teen drivers to take a carload of friends anywhere, even if the law permits it．
A study at the National Institutes of Health indicates that the part of the human brain that controls judgment and evaluates the consequences of our actions might not be fully formed until the age of 25．Until this study, researchers had placed the age at 18．If this is true, it could explain the reckless （鲁莽的） behavior of many teens, behavior that often extends into their twenties．It also could be a strong reason for being cautious about the driving circumstances of young people．
This is not the only study that indicates such caution is necessary．One study at Temple University in Philadelphia examines the results of peer（同龄人） pressure in risky driving situations．The study, which uses a driving game, has an individual guide a car through a course, both alone and in the presence of friends．Three different age groups participated in the study: 13-16, 18-22, and 24 and older．Members of the oldest group showed caution whether driving alone or with friends present, but the two younger groups took more chances when they were with their friends．Furthermore, because these drivers were accustomed to the noise and distraction of many passengers, they were unable to see their own mistakes．Once again, this is a good indication that a law restricting the number of teenagers in the car with a young driver is a good idea．
【小题1】What does the author mainly tell us in Paragraph 2?

C
What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(品脱) of blood in a man' s body. He can give a pint of blood at a time to
blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo
quickly.
What does our blood do for us? It takes food to all parts of our bodies and takes waste awa
from them. All the parts of our bodies are made up of cells, and these cells, which are very small
all need food all the time.
The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.
What makes the blood go on moving round the body in a stream? The heart sends it round.
man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee
them. It pumps blood in and out through these doors by changing the size of the rooms so that th
doors open and shut.
The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.
49. Blood is the_____
A. red liquid which comes from your finger    B. red liquid which we can see
C. red liquid which flows in a man's body     D. red cell
50. The blood in a man' s body__________.
A. makes food all the time
B. takes food to all cells in the body and takes waste away
C. supplies the cells with food and oxygen from them
D. takes waste away from the cells
51. __ makes the blood go on moving round the body in a stream.
A. The heart          B. The lung          C. The cell          D. The pump
52. This article tells us about__________.
A. a stream of blood                        B. the use of the heart
C. a wonderful pump                       D. something about blood