Nowadays film cameras are going out of our life. Do you remember how it works? And do you know the difference between a film camera and a digital camera?
A film camera is a light-proof box, which all light can’t go through. It has a lens (镜头) system to focus light onto the film at the back of the camera.
Let’s suppose that we are outside on a beautiful summer day trying to take a picture of the family dog. We are using a film camera. We finally get the dog to lie still. You point the camera at him. Light goes into the camera lens and hits the shutter (快门). In other words, nothing happens yet. Now let’s say that the dog looks really cute and you decide to take a picture. When you press the button, the shutter opens for a very short period of time. A small amount of light passes through and hits the film at the back of the camera. This creates an upside-down and reversed (反向的) picture on the film. When you finish the roll (卷) of the film, you can take it to the photo shop to develop it and you will have a great picture!
Film cameras and digital cameras work in a similar way. In digital cameras, the light falls not on film but onto a sensor (传感器) called a CCD. This change light and color into a digital information or pixels (象素). The CCD is the heart of any digital camera and usually the most expensive part - depending on how good it is.
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The underlined word “light-proof” in the passage means “_____”.
A.不透明的 B.不透风的 C.不透光的
_____ is used to focus light onto the film at the back of the camera.
A. A lens
B. A lens system
C. A light-proof system
_____ shows the picture of a running boy with an ice cream in his left hand on the film camera.
Which of the following is TRUE according to the passage?
A. Film cameras and digital cameras work in the same way.
B. After taking pictures with film cameras, we can get a great picture immediately.
C. The price of a digital camera is based on the ccd。
The best title for this passage should be _____.
A. How do Film Cameras Work
B. The Reason Why Digital Cameras Are More Developed
C. Film Cameras and Digital Cameras
A tsunami(海啸) is a series of(一系列) huge waves that can cause great destruction(毁灭) when they hit a beach. Most tsunamis are caused by underwater earthquakes, but not all underwater earthquakes cause tsunamis. About 90 percent of all tsunamis take place in the Pacific Ocean, most of them are in Japan. A strong earthquake in the ocean near Japan caused a deadly tsunami on March 11,2011. As of April 25, the number of death had been raised to 14,133, and more than 13,346 people were listed as missing. The word “tsunami” comes from theJapaneseword.
Many tsunamis could be found before they hit land with the use of modern technology. If you see the water drawback (后退) quickly and unexpectedly from a beach, run toward higher ground or inland -- there may be a tsunami coming. Also, if you are on the beach and there is an earthquake, it may have caused a tsunami, so run toward higher ground or inland. The first wave in a tsunami is often not the largest; if you experience one unusually-huge wave, go inland quickly -- even bigger waves could be coming soon.
Do you know the story of the "angel(天使) of the beach"? Tilly, A 10-year-old English schoolgirl who saved the lives of hundreds of people in Phuket,Thailand in the Asian Tsunami of 2004, by warning them a wall of water was about to strike(袭击), after learning about tsunamis in geography class. “Last term geography teacher Andrew Kearney taught us about earthquakes and how they can cause tsunamis,” Tilly said to the reporter.“I was on the beach and the water started to go funny. There were bubbles and the water went out all of a sudden. I recognised what was happening and had a feeling there was going to be a tsunami. I told mummy.”An earthquake may cause a tsunami.
A. in the city B. in the country C. under the waterWhen the tsunami is coming, we should .
A. run towards the higher place or inland
B. run to the playground
C.run into a houseTilly saved hundreds of people’s life in .
A. Japan B. Tailand C. the United KingdomTilly recognised there would be a tsunami because .
A. her geography teacher told her.
B. she found the water drawback unusually quickly
C. she had a feeling about the earthquakeWhich of the following statement is TRUE according to the passage?
A. The word “tsunami” is from Japanese because most recorded tsunamis in the world took place in Japan
B. Tsunami can only be found by modern technology before it hit the land.
C. Tsunami only happens in the Pacific Ocean
When your school doesn’t have a bus, and you live too far away to walk? How do you go to school? “Let’s carpool! ”most US middle school students will get that cool idea. Carpooling is a group of people sharing the responsibility(责任) of driving to school in the morning. There are usually four or five kids in a carpool and their parents take turns driving the kids in their cars.It might be the kids’ first experience with real teamwork. Teamwork is really important in the carpool because nobody wants to make everyone else late. It’s a great lesson in resposibility. 
Carpooling is coming into fashion everywhere now. You can find lots of informations of carpooling on the internet. Carpooling is cool! Why?
It’s good for the environment. In today’s culture of everyone needing to try their best to protect our environment, carpooling is one of the best ways. By taking 3 cars off the road, the pollution can be cut a little. Take that over a town, a city, a state, a country and think about how much less pollution is going to be in the air over the course of even one year.
Gas(汽油) now is much more expensive than it used to and if you need to watch the cents(美分), then it’s possible that carpooling could be the answer to your prayers. Even if you have to use your car once a week instead of two, that’s one round trip of gas you’re saving. So carpooling helps you save money.
Carpooling is a great way of getting to know people better. If you’re carpooling grade school kids, then you’ll find that slowly you’ll get to know your child’s peers(同龄人) and friends better. It's a great opportunity to meet people while saving the environment and your money.The word “carpool” means .
A. 合伙用车 B. 共同租车 C. 让人搭车One of drives the car in a carpool of middle school students.
A. their teachers B. the students C. their parentsIf you carpool with two persons to work every day, will be taken off the road every day.
A. no car B.one carC. two carsThere are advantages of carpooling mentioned in this passage.
A. three B. four C. fiveWe can know from the passage that carpooling .
A. is much more convenient than taking the school bus.
B. can help you save the money because you use your car less.
C. isn’t a good means to understand people better.
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Digital Atomic Watch(数字原子表) This new watch is one of the most accurate(精准) watches in fashion. You never have to do another thing except change the battery - about once every two years! This Atomic Watch displays time (12 or 24-hour mode(模式)), weekday, date and month. Water resistant(抵抗的). Weight: 2.6 oz. Display Size: 0.75" W x 0.5" H. Face Size: 1.5" W. Band Size: 0.75" W x 8.25" L. Item: #DWW Price: $ 40 |
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Dolphin Wood Kit(配套原件) Great for kids. Simple wood changed into an pretty 3-D model dolphin. No tools or glue required. Complete with 5-language instruction paper. Age 7+ Model Size: 8.5" (22 cm) long. Item: #7103-09Price: $ 8 ($15 if you take two) |
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Russian Nesting(嵌套) Dolls Russian nesting dolls are wooden dolls with one doll inside the other(7 in 1). The dolls are the ones which open piece after piece like words in a sentence, to reveal its beauty. They are all hand painted. The paint is safe for children. Wonderful souvenirs for visitors. Suitable gifts for kids. Height: 30cms. Item: #RND203 Price: $ 4 ($25 a set of dolls) |
Victor wants to buy a present for his 4-year-old cousin. He could buy .
A. the digital atomic watch B. the dolphin wood kit C. the Russian nesting dollsIf you know how to make up the dolphin wood kit, you need to help you to finish it.
A. nothing B. glue C. some toolsIf you use a digital atomic watch, you should buy a battery .
A. every half year B. every year C. every two yearsMaria wants to buy two sets of the nesting dolls and two dolphin wood kits, she should pay .
A. $ 65 B. $ 66 C. $ 23From the ads we know that .
A. you can’t wear the digital atomic watch when you go surfing
B. if you don’t know how to make up the dolphin wood kit, you can follow the instruction
C. the painting of the Russian nesting dolls are made by machines.
During my second year of nursing school, our teacher gave us an exam. I was a hardworking student and I did well in all the subjects. I finished the questions successfully until I read the last one: “What is the first name of the woman who cleans the school?”
Of course this was a joke. I saw the cleaning woman every day. She is short and about 60 years old. She has dark hair. But how would I know her name? I had never talked with her before. In fact, I’d never even thought about talking to her. I stared at my paper and started to feel rather guilty. Finally, I handed in my paper, leaving the last question blank.
Before the class ended, one student asked if the last question would count toward our grade.
“Certainly,” the teacher said. “In your life, you will meet many people. All are important. They deserve(值得) your attention and care, even if all you do is smile and say hello.”
I’ve never forgotten that lesson. Everyone deserves my attention and I should get to know all of the people who work and live around me. That was, perhaps, the most important lesson of my life. I also learned the cleaning woman’s name was Dorothy.At the nursing school, the writer .
A. know everyone’s name around her
B. did well in all subjects
C.didn’t like to have an examThe writer wrote to the last question.
A. “Dorothy” B. “blank” C. nothingFrom the teacher’s words, we can know that .
A. only one student didn’t know the answer
B. the last question was part of the exam
C. the students needn’t answer the last questionThe writer thought that .
A. the exam gave her a lesson
B. the teacher was joking
C.the clean lady was important.The teacher wanted the students to know that they should through the last question.
A. pay attention to everyone around them.
B. be friendly to the cleaning lady
C. try to make as many friends as they can in their life.
Charlie was about to climb into bed when he found there was a light on in his garden shed(棚). Then he noticed some people who were busy stealing his things.
He call the police right away. The policeman asked, “Are there any intruders(闯入者)in your house?” Charlie replied “no” and explained what was happening.
The policeman said, “All patrol cars(巡逻车) have gone out, and a policeman will go to your house when one is free.”
Charlie hung up, waited 30 seconds, and then called the police again. “Hello, I just called a short while ago because there were people stealing things from my shed. I want to let you know that they’re not a problem anymore because I’ve just shot every one of them.”
Charlie then hung up the phone. In five minutes, three patrol cars, nearly twenty policeman and an ambulance arrived at his house. Of course, the police caught the thieves.
One policeman said, “I thought you said that you shot every one of them!”
Charlie replied, “I thought you said there were no patrol cars free!” The story happened .
A. in the morning B. in the afternoon C. in the eveningThe police didn’t want to come at once because .
A. there was no patrol cars free. B. they didn’t think it was crucial.
C. they didn’t know what happened.Charlie called the police __for help.
A. only once B. twice C. three timesThe police came quickly because they thought .
A. the thieves died
B. Charlie was shot
C. the thieves broke into the house We can infer(推断) that Charlie .
A. was good at shooting
B. liked to play a joke on the police.
C. didn’t belive what the policeman said.