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. In I860, 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.
In 1961, 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, 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 illnesses. 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, or stop sick people getting jobs. The two scientists found ______in 1961.
| 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 arc 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 understood 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 |
阅读理解
Paul Nicklen waited patiently on a sheet of ice in the Arctic．He was there to take pictures for National Geographic．Finally，he saw something big and white．It was a polar bear，swimming towards him in the icy water．
Paul lay down on the ice to get a better photo，but the polar bear jumped out of the water and tried to attack him！Luckily for Paul，the ice cracked，or broke．and the bear fell back into the water．The polar bear wasn’t so lucky．It couldn’t get a meal and had to swim farther away to find food．
To understand the polar bear’s problem，you need to know two things about the Arctic．First，the Arctic is mostly ocean．Second，ice covers a lot of the Arctic Ocean．In winter，the ice forms a thick，white sheet，but in summer，the ice becomes thinner and breaks into pieces．Sea ice is the key to survival(幸存)for Arctic animals．However，because of global warming，Arctic temperatures are rising and polar ice is melting．
Polar bears need ice to hunt seals，their favorite meal．They stand on the ice and wait for the seals to come up for air．As Arctic ice melts，polar bears have to swim farther to find ice floes，or large pieces of floating ice．Sometimes，bears have to swim more than 200 km to find an ice floe．Some bears cannot swim that far and，sadly，they drown．
On his last trip，Paul Nicklen saw three dead bodies of polar bears．Before global warming threatened Arctic ice，a dead bear was a rare sight．Paul is sad to see the dead bodies．Wildlife experts think global warming will have a terrible effect on polar bears．In the future，polar ice will continue to shrink and endanger the bears．some scientists believe 65 percent of the world’s polar bears will disappear by 2050．In other words，polar bears are in great danger．The main idea of the passage is that________．
A．polar bears are amazing swimmers
B．Arctic temperatures are rising
C．global warming is endangering polar bearsThe polar bear that tried to attack Paul was unlucky because________．
A．Paul swam away
B．it was on an ice floe
C．it couldn’t eat PaulAccording to the passage，polar bears hunt seals by________．
A．waiting on the ice
B．waiting in the water
C．drowning the sealsFrom the passage，Paul Nicklen is maybe a________．
A．scientist
B．photographer
C．psychologistWe can infer that polar bears________．
A．won’t have any food in 2050
B．will all die before 2050
C．cannot find food easily
任务型阅读
Street Markets Around the World
There are many ways of shopping．You can shop by telephone，by post or through your home computer，but for many people，the most exciting way to shop is also the most traditional—at a street market．You can find markets anywhere in the world．Here are four of them：
There are many“floating markets”in Asia；perhaps the most unusual is in Thailand，at a place called Damnoen Saduak．It’s open from six in the morning to the noon every day．People sell fresh fruit from their boats． |
Many Belgians(比利时人)say that the Grand Place is the most beautiful square in the world．It is the home of a colorful flower market．It’s open every day except Monday．On Monday，instead of flowers，there’s a wonderful bird market！ |
One of the world’s most famous markets is in Mexico City—the Sonora Market．You can buy toys，birds，herbs and medicine．There are all kinds of things．It’s open every day from early in the morning till late at night． |
In England，every weekend，thousands of young people from all over London travel to the Camden Market—it’s the place to go for street fashion，CDs and tapes．Many people also go there for fun． |
根据短文内容，在表格中的横线上填写所缺单词。每空一词。
| Names |
Countries |
Features |
Things to Sell |
Open Time |
| Damnoen Saduak |
Thailand |
unusual |
fresh (1)________ |
every day |
| the Grand Place |
Belgium(比利时) |
beautiful |
(2)________ |
every day except Monday |
| the Sonora Market |
Mexico |
(3)________ |
all kinds of things |
every day |
| the Camden Market |
(4)________ |
fashionable |
fashion things |
every (5)________ |
阅读理解
Some people have a very poor sense of direction．Unluckily，I am one of them．I have visited a place many times but I may still get lost there the next time．
When I was a little girl，I never dared ask strangers the way．So I used to walk round in circles and hope that by chance I would get to the place I was going to．
Now，I am no longer too shy to ask people for directions，but I often receive helpless or even wrong informarion．So I try to avoid giving people wrong directions．If anyone asks me the way to somewhere，I always say，“Sorry，I am a stranger here．”
Once on my way to work I was stopped by a man．He asked me if I could tell him the way to the Friendship Building．I gave him my usual reply．But just as I walked on only a few steps，I realized that he had asked the way to my office building．However，I had no time to turn back and look for him．I was rushing to meet with someone at my office and I didn’t want to keep him waiting．
When I just got to my office，the secretary showed in the man who had asked me for directions．Imagine how embarrassed I was and how surprised he was when we saw each other at the first sight！The writer always refuses to give people directions because________．
| A．she’s a stranger to the city |
| B．she doesn’t know the people |
| C．she has no time to help others |
| D．she’s afraid of giving wrong directions |
A man stopped the writer on the way to________．
| A．sell her something |
| B．ask for the time |
| C．make friends with her |
| D．ask for the direction |
The Friendship Building is the place where the writer________．
| A．lives |
| B．studies |
| C．works |
| D．teaches |
The word“embarrassed”in the last paragraph means________．
| A．尴尬的 |
| B．困惑的 |
| C．激动的 |
| D．拮据的 |
Which of the following is TRUE according to the passage？
| A．The writer is too shy to give others directions． |
| B．The writer has a very poor sense of direction． |
| C．The writer never got lost when she was young． |
| D．The man was quite nervous when he saw the writer． |
阅读理解
A city without cars would be very strange，right？But Venice(威尼斯)is such a city．
Venice is in the northeast of Italy．It wasn’t built on land，like Beijing or Shanghai，but on more than 110 islands．Seawater is everywhere around the city．
Even so，travel isn’t that difficult．The waterways have always been the best way to get around．There are 117 waterways and more than 400 bridges that can lead you where you want to go．
People in Venice move from place to place by boat．They like to enjoy the scenery and cool summer nights while taking boat trips．They can talk to other people as they go along．
Venice grew out of small islands in saltwater lakes when some Italians escaped from a war more than 1，500 years ago，and built homes there．
Water makes the city special，but it is also a big problem．
Once，people used too much underground water．This made the city get lower little by little．Now the city has gone down by 23 centimeters．
Another problem is the rising seawater．The temperature has risen over the years．This has made the ice of Arctic Ocean(北冰洋)melt(融化)．
Every year，high waters hit the city in autumn and winter．When a lot of water comes，more than half of the city is underwater．
Scientists are trying different ways to stop the city from getting even lower．According to the article，which picture shows the right position(位置)of Venice？
A． |
B． |
C． |
D． |
Which is the most impossible way for people in Venice to get around in the passage？
| A．On foot． |
| B．By boat． |
| C．By car． |
| D．By bike． |
Why is Venice still getting lower and lower？
| A．Because too many people live there． |
| B．Because people used too much underground water． |
| C．Because lots of bridges have been built． |
| D．Because the underground water is rising． |
What seasons are dangerous for Venice because of high waters？
| A．Summer and autumn． |
| B．Autumn and winter． |
| C．Summer and winter． |
| D．Spring and winter． |
The article is mainly about________．
| A．the position of Venice |
| B．the history of Venice |
| C．the problem of Venice |
| D．the scenery of Venice |
阅读理解
| Sunny English Club For students 16:00—18:00 every Saturday 210 yuan a month 8 Trees Street Tel：83785290 Foreign teachers，English songs and films and more！  |
| Ocean Museum 9:00—17:00 from Thursday to Sunday Ticket：￥15／$5 248 Gold Beach Street Tel：(0574)68654796 Show you a full picture of sea lives！  |
| Health Centre 9:00—17:30 16 Yong Le Street Tel：3801451 Free examinations for those over 70！ Give you good advice to keep healthy！  |
根据表格中所给的信息，选择最佳答案。Sunny English Club is for________．
| A．nurses |
| B．policemen |
| C．businessmen |
| D．students |
You will pay________if you want to stay in Sunny English Club for half a year．
| A．300 yuan |
| B．600 yuan |
| C．1260 yuan |
| D．2400 yuan |
You can visit Ocean Museum________．
| A．on Saturday |
| B．on Wednesday |
| C．on Monday |
| D．anytime |
One can get free examinations in Health Center if he is________．
| A．9 |
| B．17 |
| C．67 |
| D．73 |
If you become interested in the life of fish，you should go to________．
| A．Health Centre |
| B．Ocean Museum |
| C．Sunny English Club |
| D．16 Yong Le Street |