On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA. DNA is something that everybody has, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time. In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family. It is because of small things named “genes” in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language.
In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell (细胞) to build its parts. Scientists have now found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save more people from several illnesses.
Most people hope that this will help make better medicine and help sick people. Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs. Man would have to meet a lot of trouble if DNA technology (技术) wasn’t limited (限制) in use. When did we first know why we look like other people in our family?
| A．In 1860. | B．In 1953. | C．In 1961. | D．In 2000. |
What did the two scientists first discover in 1961?
A. The “map” of DNA. B. A new illness.
C. The language of DNA. D. A message of DNA.What can we do if we understand some “words” of the language inside the body?
| A．Make people get new jobs. |
| B．Make medicine for illnesses. |
| C．Make maps of human. |
| D．Make people less attractive. |
What do people think about this work?
| A．It can cause good or bad results. |
| B．It can cause only good results. |
| C．It can cause good results but won’t work. |
| D．It can cause only bad results. |
Do you know how to play a game called “Musical Chairs”？It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of making music. You may use a piano or any other musical instrument, if someone can play it. You may use a tape recorder. You can even use a radio.
Put the chairs in a row. The chairs may be put in twos, back to back. A better way is to have the chairs in one row with each chair facing in the opposite direction to the chair next to it.
The game is easy. When the music starts, the players walk round the chairs. Everyone goes in the same direction, of course, they should walk in time to the music. If the music is fast they should walk quickly. If the music is slow, they should walk slowly.
The person playing music cannot see the people in the game. When the music stops，the
players try to sit on the chairs. If a person cannot find a chair to sit on，he drops out. Then，before the music starts again，one chair must be taken away. When the music stops again one more player will be out.
At last, there will be two players and one chair. The one who sits on the chair when the music stops is the winner.If ten people are playing musical chairs，you must begin with ________.
| A．nine chairs | B．ten chairs |
| C．eleven chairs | D．one chair |
Which of the following is not suitable for playing musical chairs？
| A．A piano | B．A radio |
| C．A tape recorder | D．A telephone |
The chairs should be put ________.
| A．with the desks |
| B．before the winner |
| C．all over the room |
| D．in a line |
When the music starts, the players must ________.
| A．run about the room |
| B．get down |
| C．walk around the chairs |
| D．sit on the chairs |
Which of the following statements is NOT true？
| A．The game “Musical Chairs” is not difficult to learn. |
| B．The last one can sit on the last chair. |
| C．The winner can sit on the chair. |
| D．If the person plays music, he cannot be the winner. |
阅读表达
阅读短文，根据要求完成下面各小题。
According to a new survey, students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery on the way to and from school. Now in many big cities in China, some schools have taught an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. 77① _____________Chen Haoyu, a teacher at Beijing No. 25 Middle School, gives young students advice on how they should deal with danger.
If you are robbed
Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police later.
If you are in a traffic accident
If a car hurts you, you should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. 77②_____________.
If it is raining hard and there is lightning
Don’t stay in high places and stay away from trees.
When there is a fire
Get away as fast as you can. Put wet things on your body and try to find an exit. Do not take the lift.
If someone is drowning
If you can’t swim, don’t get into the water. Cry out for help.
78 Remember that danger is never as far away as you think. Take care of yourself at all times!How many suggestions for dealing with danger did Chen Haoyu give?
_________________________________________请从A、B、C中为77①、②选择合适的选项，并将其字母序号分别填在下面的横线上。
A. This is because you don’t know how seriously you are hurt.
B. It is important to protect you from being hurt.
C. And they can learn how to save lives and know how to stop danger before it really happens.
① _____② _____请把划线部分的句子翻译成汉语。
______________________________________________________________What should you do when there is a fire?
_____________________________________________________________请为本文拟一个合适的标题。
______________________________________________________________
It seems to be strange to you that there is a blind spot (盲点)on the eyes. Here is an interesting experiment (实验) that can make something disappear, when one eye is open.
Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing.
Why does the letter disappear? It is because there is a blind spot on the eyes. When the image (影像) of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.The writer of the passage thinks that ________ there is a blind spot on the eyes.
| A．few people know |
| B．no one knows |
| C．most people know |
| D．all the people know |
The word “disappear” in the passage means ________ in Chinese.
| A．出现 | B．远离 | C．消失 | D．靠近 |
You fail to see the letter L in the experiment because ________.
| A．your eyes are poor |
| B．its image falls on the blind spot |
| C．your left eye is not open |
| D．you move it close to your eye |
In which order (顺序) should you do the experiment?
①Hold the card
②Move the card nearer
③Close your right eye
④Write two English letters
⑤Look at the letter R
⑥Make a card
| A．④⑥①②③⑤ | B．①③⑥④⑤② |
| C．⑥①④③②⑤ | D．⑥④①③⑤② |
The passage mainly (主要) tells us ________.
| A．the blind spot can move |
| B．an interesting experiment |
| C．where the blind spot is |
| D．there is a blind spot on the eyes |
In a school some trouble was caused by the students. They are very naughty and didn’t obey the school rules.They often fought with each other and they didn’t forgive each other. One day a new teacher came to this school. When he heard that, he came up with a good idea.
He told each of his students to bring a clear plastic bag and a bag of potatoes to school. For every person they didn’t want to forgive in their lives, they chose a potato, wrote the person’s name on it, and put it in the plastic bag.
Some of their bags were very heavy. They were then told to carry this bag with them everywhere for one week. They would put it beside their bed at night, on the seat when sitting in a car or on a bus, and next to their desk at school. Days of carrying the bags around with them made students get to know what a weight they were carrying in their minds. And they had to pay attention to it all the time so they didn’t forget it or leave it in embarrassing (令人难堪的) places. As time passed by, the potatoes went bad and smelt nasty.
Too often we think of tolerance as a gift to other people, and it clearly is for ourselves! If we choose to keep our sadness and hatred (仇恨) in our hearts, we will have to carry them around all our lives. After that, the students got on well with each other and didn’t fight anymore. Learn to forgive , and you will be happier at the same time.The new teacher asked the students to bring ________ to school.
| A．a clear plastic bag of potatoes |
| B．a clear plastic bag and a potato |
| C．some clear plastic bags of potatoes |
| D．a clear plastic bag and a bag of potatoes |
They wrote the person’s name on the potato, who________.
| A．they liked | B．they didn’t forgive |
| C．hated them | D．liked them |
The underlined word “tolerance” means________.
| A．感恩 | B．宽容 | C．仇恨 | D．悔恨 |
From this passage we can know that ________.
| A．we should learn to forgive |
| B．we should know something about potatoes |
| C．we shouldn’t use plastic bags |
| D．we should take potatoes to school |
Which of following is NOT true?
| A．Tolerance is a gift for other people and ourselves. |
| B．Carrying a bag of potatoes made the students embarrassed. |
| C．The students had to take bags of potatoes with them everywhere. |
| D．The students had to take bags of potatoes with them for about two weeks. |
| A Fantastic Journey to London Alan Travel Service   Time: July 22—August 14, 2012 Hotel: Hilton Hotel (free breakfast ) Places of interest: St. Paul’s Cathedral ( July 23) Tickets: £14 each (kids half-price) Big Ben ( July 24 ) Tickets: £10 each (kids half-price) Skating Championship: (July 27—August 12) You can book tickets at 0044-020-6528 Enjoy the journey together! Total Fee: £2960 each (kids half-price) Tel: 0371-6315680 Fax:0371-6501283 Visit us at www. Look-out 2004@alan.com |
How many days will you spend if you join in Alan Travel Service’s journey to London?
| A．14. | B．22. | C．24. | D．29. |
If you want to visit some places of interest on July 24, you can visit ______.
| A．St. Paul’s Cathedral |
| B．Big Ben |
| C．Hilton Hotel |
| D．the Skating Championship |
Mr. Li wants to visit St. Paul’s Cathedral with his six-year-old son, he should pay _____ for it.
| A．£14 | B．£21 | C．£28 | D．£7 |
When can you watch the Skating Championship in London?
| A．From July 25 to August 12. |
| B．From July 22 to August 14. |
| C．From July 23 to August 12. |
| D．From July 27 to August 12. |
Which of the following is WRONG according to the poster?
| A．In Hilton Hotel you will have free breakfast every day. |
| B．If you want to find more information, you can call 0371-6315680 for help. |
| C．Mr. Li and his wife will spend £5,920 for their journey to London. |
| D．You can book tickets for the Skating Championship at www. Look-out 2004@alan.com. |