DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time, In1860, Mr Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”(基因) in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are really messages . They’re written in the DNA with a special language.
In1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell﹙细胞﹚to build its parts. So far, scientists have 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 to save people from several illness. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way, just to make people more attractive (有吸引力的)，or stop sick people getting jobs. When did Mr Mendel discover why we look the same as other people in our family?
A. In 2000. B. In 1961 C. In 1953 D In 1860What did the two scientists find in 1961? They found_____.
| A．all the words in the DNA map |
| B．Small things called “genes” in our body |
| C．The first “word” they could understand in that language |
| D．those small parts are written in the DNA with a special language |
How can we help sick people if we understand more “words” in the DNA map?
| A．Make better medicine. | B．Make them get jobs. |
| C．Make maps for them. | D．Make them attractive |
Which one is not true according to the article?
| A．We look like our parents because of “genes” in our body |
| B．We have understand what all the words in the DNA map do |
| C．DNA is the whole “map” of the human body. |
| D．DNA tells the cell to build its parts. |
What do people think about this research about DNA?
| A．It can be only bad | B．It can be only good |
| C．It can be good but won’t work | D．It can be good and bad |
What is colour? Why do some of the things around us look red, some green, others blue?
Colours are really made by reflected (反射) light. We see colour because most of the things reflect light. Something is red, for it reflects most of the red light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn’t reflect any light, it is black.
Some of the light is reflected and some is taken in (吸收) and turned into heat. The darker the colour is, the less light is reflected, the more light is taken in. So dark-coloured clothes are warmer in the sun than light-coloured clothes.When something reflects light, we can _______ .
| A．see its colour | B．see its heat |
| C．not see its colour | D．see nothing |
The dark-coloured clothes are warm because _________ is taken in.
| A．more light | B．less light |
| C．more colour | D．less colour |
In summer ________ make people feel cool.
| A．dark-coloured clothes |
| B．red-coloured clothes |
| C．green-coloured clothes |
| D．light-coloured clothes |
When trouble comes， what do we usually do? We pick up our mobile phones and call for help. That’s easy， right? But in an emergency， many people are unable to call for help. Floods and earthquakes come suddenly. Wars can hurt or kill. Successful communication can sometimes mean the difference between life and death.
Meet French NGO Telecoms Sans Frontiers (Telecommunications Without Borders (边际)). Its goal is to use mobile communication technology (技术) to help people in need. TSF began in 1998. First， they opened their main base (总部) in France. Then in 2003， they started another base in Nicaragua. The next year they opened their Thailand base. Now if a disaster hits anywhere in the world， TSF is ready. They can send workers to a disaster area to set up communication systems within 24 hours.
Once TSF arrives at a disaster area， they set up telephone connections (连接点）and Internet service. They share these services with other international helpers on the scene such as the UN or UNICEF. Mobile communication helps other volunteers do their jobs better.
TSF also offers three-minute phone calls to local people who need to contact their loved ones. These communications can allow people to get together again after being separated (分开). Often the callers are moved to tears after speaking to a relative found to be still alive. Then the families can decide on a safe course of action for their family members.
Since 1998， TSF has helped thousands of people in many countries. Most of the TSF workers does not get paid with money， but the satisfaction（满足）of helping others and changing lives is often a great reward.Telecoms Sans Frontiers is __________.
| A．a mobile phone company from France |
| B．a charity group from France |
| C．a mobile phone company from Thailand |
| D．a charity group from Thailand |
How soon can TSF send workers to a disaster area?
| A．In one day. | B．In two days. |
| C．In three days. | D．In four days. |
Which one shows the right order of the following events?
a. People are moved to cry.
b. TSF workers set up communication systems.
c. A disaster hits somewhere in the world.
d. TSF arrives at the disaster area in a short time.
e. People make free calls to other family members.
| A．a-b-c-d-e | B．c-b-d-a-e |
| C．c-d-b-a-e | D．c-d-b-e-a |
Which of the following is TRUE?
| A．TSF has a history of over 20 years. |
| B．Most TSF workers are volunteers. |
| C．TSF provides services for local people only. |
| D．TSF had opened 4 bases all over the world by 2004. |
Can dogs and cats get along well in the same home? People who are thinking about getting a dog as a friend for their cat are worried that they will fight. A recent research has found that if the cat is taken back home before the dog， and if they are introduced when still young (less than 6 months for cats， a year for dogs)， it is highly probable that the two pets will get along swimmingly. In two-thirds of the homes cats and dogs have a good relationship.
However， it wasn’t all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes， while aggression (侵略，好斗) and fighting were found in 10% of the homes.
In homes with cats and dogs living in peace， researchers found a surprising behavior. They are learning how to talk each other’s language. It is a surprise that cats can learn how to talk “Dog”， and dogs can learn One reason for this is probably that some of their body languages are just different. For example， when a cat turns its head away it means aggression， while a dog doing the same means submission (顺从).how to talk “Cat”.
What’s interesting is that both cats and dogs have appeared to become smarter. They can learn to read each other’s body languages， suggesting that the two may have more in common than was expected. Once familiar with each other’s body language， cats and dogs can play together， and enjoy sleeping together on the sofa.
The importance of this research on cats and dogs may go beyond pets – to people who don’t get along well， including neighbors， workmates， and even countries. If cats and dogs can learn to get along， surely people have a good chance.The underlined word “swimmingly” in Paragraph 1 is closest in meaning to ___________.
| A．early | B．mostly | C．quickly | D．smoothly |
Some cats and dogs may fight when ___________.
| A．they are cold to each other |
| B．they look away from each other |
| C．they misunderstand each other’s body languages |
| D．they are introduced at an early age |
What can we humans learn from cats and dogs?
| A．We should learn to get along well with others. |
| B．We should know more about animals. |
| C．We should live in peace with animals |
| D．We should learn more body languages. |
Sometimes， kids feel that they don’t like sports because they may not understand how to play them or they haven’t had much practice doing them. Sports can seem complicated because of all the rules and special equipment (设备). Even the fields and courts they are played on come in different shapes and sizes and have confusing – looking (令人困惑的) lines drawn on them.
People spend many years learning about their favorite sports and practicing how to do them well. So don’t feel bad if you don’t know the difference between a “corner kick” and a “goal kick” in soccer. If you want to learn more about a sport， you might ask your mum or dad about the programmes that introduce kids to new sports. These may be better than just joining a team that starts playing games right away without much explaining first.
Gym class and programmes at school can also be a way to try new sports with a mix of kids. Another way to learn about a sport is to watch instructional videos or DVDs or check out library books that explain the rules and offer advice for kids to learn to play them.
If you have an older friend or family member who’s good at a sport， you might ask him or her to help you practice. Some sports are just good to understand， even if you never want to play on a competitive team. For example， you might play softball or volleyball， just for fun， at a summer picnic.Which would be the best title for this passage?
| A．Sports Are Good for You |
| B．What Sport Is Most Suitable for You |
| C．Learning about Sports |
| D．How and Where to Have Sports |
The underlined word “complicated” in the first paragraph probably means “___________”.
| A．interesting | B．harmful |
| C．easy | D．difficult |
According to the writer， it is __________ for / of you not to be able to tell the difference between a “corner kick” and a “goal kick” in soccer.
| A．natural | B．impossible |
| C．funny | D．foolish |
When I was young， my family got our first computer. As years went by， I wanted to get a new one， and my father agreed. We went to many stores and looked at many flyers (小广告). At last we bought an HP computer.
During the first week， I noticed that our computer had some problems. I tried to fix it， but failed. Finally I had to phone the HP company. After five hours’ hard work， the computer still did not work. My dad didn’t have a choice but to return the whole thing.
A few days later， we decided that I should go on the internet and order some parts to build a new computer by myself.
It was not an easy thing for me to deal with it， but in the end I finished. From these setbacks (挫折)， I have learned， and now believe if the computer that I bought from the store didn’t have problems， then I would not learn how to build a new one. Even though I spent lots of time on it， I know it wasn’t a waste of time.
I now have a self-built computer， and I am very pleased.The writer wanted to have a new computer because __________.
| A．he has much money |
| B．the one he had was cheap |
| C．his dad would like to |
| D．the first one was too old |
__________， they telephoned the HP computer company.
| A．Before they bought the HP computer |
| B．A week after they bought the computer |
| C．A week before they bought the computer |
| D．A few days before they bought the computer |
Which of the following is true according to this passage?
| A．The HP computer was very cheap. |
| B．The writer built a new computer by himself at last. |
| C．The HP company managed to mend the computer at last. |
| D．Dad didn’t like the newly-built computer at all. |
粤公网安备 44130202000953号