When people go to the hospital to have a medical examination, sometimes doctors will ask them to have an X-ray or CT. What about a PET? PET stands for Positron Emission.
Tomography（正电子成像素）. PET scanner（s 扫描仪）create 3-D images of what is happening in the body. Scientists are devloping this medical equipment that could tell them more about the human body, and help them develop more-effective treatments for cancer, heart disease and brain disorders. It would be the world’s first full-body PET scanner.
Researchers are calling the large scanner that they are developing Explorer. It will give medical workers images of what is happening in the whole human body that have never been seen before. PET scanners now give doctors images of only parts of the body.
The U.S National Institutes of Health gave a research team at the University of California at Davis $ 15.5 million to build the scanner.
Ramsey Badawi, a professor at UC Davis, says the scanner will give researchers new information about how human organs （器官）work together.
“We’re a system of organs and all the organs interact with each other. And we’ve never really been able to get that with imaging before, and now we’re going to be able to look at that. These images help us find out and follow diseases. The new scanner will help us do that even better.”
Simon Cherry, another professor at UC Davis, says the PET scans can show the progress of both disease and medical treatments. “With PET scans we’re looking at function. We’re actually able to say something about what the cells in the body are doing. He says the Explorer uses a much lower amount of radiation（辐射）than today’s PET tests, and creates images more quickly. “So we can do scans in maybe 30 seconds that now take 20 minutes. Or we do scans under a very small radiation.”
A complete view could help researchers develop new medicines that target diseases and parts of the body. It could help doctors reduce harmful side effects by following the movement of medicines through the body.
The researchers hope to test the Explorer with humans in three years.
1.What is the most obvious advantage of Explorer about the image it produces?
A. It will give doctors images of human organs.
B. It can offer doctors images of the whole human body.
C. It will give doctors images of only parts of the body.
D. It will give doctors images of better quality.
2.What does the word “It” mean in the last but one paragraph?
A. The body B. A new medicine
C. A complete view D. A disease
3.What’s the author’s attitude toward Explorer?
A. Doubtful B. Positive
C. Supportive D. Objective
4.What’s the main idea of the passage?
A. PET scanners create 3-D images.
B. Doctors will develop more effective treatments for cancer.
C. The world’s first PET scanner will be put into use.
D. A full-body PET scanner is being developed.
In Rio , one of the points of attraction is doubtlessly the most famous beach in the world, the Copacabana. When the weather is right the Copa becomes a stage on which everyone can play a part. Rio’s beaches, however, are bad news for swimmers. The surf is so striking. Often careless or over-courageous tourists must be pulled out of the water by a rescue(救援) team. In peak season during January and February, the helicopters of the governmental rescue organization, fly life-saving tasks from sunrise to sunset. Doctors also need to be on board when the control room reports an emergency(突发事件). The doctors and rescuers will do their best with the equipment available on board. If the patient shows no signs of recovery, the rescue team decides to fly him to hospital.
In Rio, lifesaving is a man’s job. The four-meter-high watchtowers are always manned. Alarm at tower number 5, a woman has swum too far out to sea and can’t make it back to the beach by herself. One minute later the rescue team has reached the Copacabana. From a height of ten meters above the water, Luis Carlos jumps into the sea close to the helpless swimmer. His workmates on board must keep an eye on him so that they can tell the pilot in which position to keep the helicopter. Another man is in the water now to help calm the woman down and get her ready to be airlifted. The pilot must slowly control the helicopter sideways and aim carefully. Once the net is full, the helicopter slowly flies to the beach.
The air rescue team is back on duty again. In the course of the day, there are eight more emergencies. The daily record at the end of the day reads, “nothing unusual happens.”
1.Which kind of person is more likely to have an accident in Copacabana?
A. a man who can’t swim
B. a man who has nothing to worry about
C. a man who fears the sea
D. a man who was a doctor
2.When the rescuer jumps into the sea to help the swimmer in danger, the helicopter will ______
A. fly to them as close as possible
B. fly over them and wait for orders
C. fly slowly to the beach
D. fly to the hospital
3.What can we infer from the text?
A. The Copacabana is a bad place for swimmers.
B. After the rescuers pick up the patient, they will send them to hospital.
C. If there is no accident, the rescue team will record “nothing unusual happens ”.
D. The helicopters of the rescue organization will fly tasks day and night.
Britain’s Beautiful National Parks Offer Lots to See
Many visitors to the UK go straight to London and never explore outside the capital , which is a pity, for there is a huge variety of landscape only a few hours away, in any one of Britain’s largest areas of protected countryside, its national parks.
The Cairngorms
The biggest is the Cairngorms in northern Scotland, with some of the country’s highest mountains and the best place for skiing. Climbing and fishing are also popular, along with Scotland’s national game, golf. Wildlife enthusiasts are well rewarded this is the home of
the red deer, red squirrel and golden eagle.
The Lake District
Over the border in England is the Lake District, originally made famous by local Romantic poet William Wordsworth two hundred years ago. Crowds of people have been travelling here since 1847 when a railway was built to its biggest lake, Windermere. Children’s writers have found inspiration here too, and the mountains make for excellent walking, with breathtaking views.
Snowdonia
Wales also has its fair share of very impressive landscape Snowdonia was one of the
first national parks to be created in 1951. You will find the road signs in two languages and hear Welsh spoken in the local shops. If mountain climbing is not your thing, try visiting a castle built by a 13th-century prince, or check out the nearby beaches.
The Jurassic Coast
Covering 95 miles of the coastline from East Devon to Dorset, the Jurassic Coast is just as amazing, with rocks recording 185 million years of the earth’s history. The first underwater dinosaur（恐龙） remains were found in the high rocks here in the early 19th century.
The Giant’s Causeway
For the strangest coastal scenery of all, cross the Irish Sea to the Giant’s Causeway. Created 50-60 million years ago, the Giant’s Causeway has been a source of respect, fear and wonder through the ages. So it’s not surprising that all kinds of imaginative stories come from it.
1.If a person is fond of wild animals, which one is the best choice for him?
A. The Cairngorms B. The Lake District
C. Snowdonia D. The Giant’s Causeway
2.What can you learn from the passage?
A. The Lake District is a good place to create works for painting.
B. Snowdonia is the first national park to be created in Britain.
C. The first dinosaur remains were found on the Jurassic Coast.
D. You can get to the Giant’s Causeway by crossing the Irish Sea.
3.Where is the article most likely to be taken from?
A. A map B. A newspaper
C. A science book D. A textbook
假定你是李华，计划寒假找份兼职工作．下面的招聘广告引起了你的注意，请根据要点（箭头所指内容）写一封申请信．
注意：1．词数：100左右；
2．可适当增加细节，以使行文连贯；
3． 开头和结尾已经为你写好，不计入总词数．
Dear Mr． Smith，
I've read your advertisement for a volunteer for children's winter camp．
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours，
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改．
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．
删除：把多余的词用斜线（\）划掉．
修改：在错的词下划一横线，并在该词下面写出修改后的词．
注意：1．每处错误及其修改均限一词．
2．只允许修改10处，多者（从第11处起）不计分．
Dear Mary，
I am writing to invite you to attend a lecture be held at 9：00 next Sunday in our school hall．
In recently years， learning Chinese have become popular among people around the world． Foreign students are aware of the important and necessity of learning Chinese well． A famous professor about language learning is invited to give a lecture about it， what is of great help for your Chinese learning． In the lecture， you can learn about the reasons for learning Chinese is focused on． What's the more， many ways of improving your Chinese will be suggested to you． Most importantly， you will be encouraged to making greater efforts． However， I really hope you will grasp the good opportunity．
Your early reply would be high appreciated．
Yours，
Li Hua
Parents， they are here to clothe us， feed us and， embarrass us． Sixteen is a_____ ripe age for embarrassment and poor Rain Price of Utah was no_____． It was the beginning of his high school year and his first time to______the bus． So it was really embarrassing when his dad Dale wave him off． After school， he______his mom Rochelle to stop Dale from doing it again． Guess who overheard（偷听）？
To Rain's_____， not only did the father decide to go on waving his son goodbye，______he decided to send him off ______in costume． But this was not a one-time incident； Dale dressed up in______clothes every single day for 170straight school days．
"When he did it the first day I was _____． You don't want to see your dad dressing up in a wedding dress，______at you on the bus，" Rain told the Metro， to which his dad_____： " I hope this lives with him for the rest of his life．" Dale made his______goodbye on and on， from the Little Mermaid to the Wonder Woman．
Dale became______as the "Wave At The Bus Dad"， coming out in the most strange and funny costumes and never repeating the same_____． He said he only spend around $50 the whole year and ______friends and neighbors to loan him costume and other materials． So the family could______the incidents with the rest of the world． Rochelle created a blog to ______all the costumes．
Rain is now all grown up at 19． He still______Dale as a blushing bride， "In the end， it was just_____． I was laughing on the bus the whole way． I am______him now．"
1.A. hopefully B. particularly C. slightly D. quietly
2.A. exception B. way C. use D. excuse
3.A. ride B. see C. sit D. choose
4.A. ordered B. suggested C. threatened D. begged
5.A. surprise B. joy C. disappointment D. sorrow
6.A. and B. but C. so D. while
7.A. performed B. shouted C. cried D. dressed
8.A. expensive B. different C. boring D. necessary
9.A. with smiles B. as usual C. in shock D. at random
10.A. waving B. kissing C. hugging D. bowing
11.A. devoted B. used C. responded D. led
12.A. special B. beautiful C. pitiful D. international
13.A. regarded B. treated C. scolded D. known
14.A. time B. look C. place D. location
15.A. divided into B. puton C. relied on D. helped with
16.A. fight B. share C. learn D. present
17.A. document B. pen C. book D. cut
18.A. doubted B. confused C. complained D. remembered
19.A. money B. reputation C. fun D. family
20.A. excited about B. ashamed of C. worried about D. proud of
