Film cameras and digital cameras work in a similar way.
Film cameras
After all, a film camera is basically a light – proof (不透光的) box. 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. What happens? Light goes into the camera lens and hits the shutter. In other words, nothing happens yet. Now let’s say that the dog looks really cute and you decide to snap a picture. What happens? 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)image on the film.
When you finish the roll of the film, you can take it to the photo shop to develop it and you will have a great picture of your dog!
Cameras come with different lens lengths. Why does it matter? Many small cameras have shorter focal lengths, which means that there is a small distance between the lens and the place where the light focuses at the back of the camera. This gives you a large view of the area you are taking a picture of. Lenses with a long focal length show a smaller area but allow you to focus on distant objects and make them bigger. They are often called telephoto lenses. A good example of a long focus lens is one that is used by sports photographers to get photos of football players as if they were standing right beside them.
Digital cameras
In digital cameras, the light falls not on film but onto a sensor (传感器) called a CCD (Charge Coupled Device). This digitally converts(转变) 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.
1.Which of the following statements is TRUE?
A.Both digital and film cameras focus light onto the film.
B.All cameras have a sensor.
C.Digital cameras and film cameras have something in common. .
D.Small cameras usually have longer focal lengths.
2.In the “Film cameras” part, you fail to take the picture of the dog because _____.
A.light goes into the camera lens and hits the shutter
B.you haven’t aimed the camera at the dog
C.the image of the dog is not created
D.the sensor fails to convert light and color into a digital information
3.The main reason that sports photographers can get clear and big photos of players is that _ ___.
A.they use digital cameras B.the lens of their cameras is excellent
C.their focus lenses are short D.their focus lenses are long
4.Generally speaking, a digital camera’s price is ____.
A.closely related to the quality of the CCD
B.irrelevant to the quality of the CCD
C.closely related to the lens
D.irrelevant to the lens
高三英语阅读理解中等难度题
Film cameras and digital cameras work in a similar way.
Film cameras
After all, a film camera is basically a light – proof (不透光的) box. 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. What happens? Light goes into the camera lens and hits the shutter. In other words, nothing happens yet. Now let’s say that the dog looks really cute and you decide to snap a picture. What happens? 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)image on the film.
When you finish the roll of the film, you can take it to the photo shop to develop it and you will have a great picture of your dog!
Cameras come with different lens lengths. Why does it matter? Many small cameras have shorter focal lengths, which means that there is a small distance between the lens and the place where the light focuses at the back of the camera. This gives you a large view of the area you are taking a picture of. Lenses with a long focal length show a smaller area but allow you to focus on distant objects and make them bigger. They are often called telephoto lenses. A good example of a long focus lens is one that is used by sports photographers to get photos of football players as if they were standing right beside them.
Digital cameras
In digital cameras, the light falls not on film but onto a sensor (传感器) called a CCD (Charge Coupled Device). This digitally converts(转变) 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.
1.Which of the following statements is TRUE?
A.Both digital and film cameras focus light onto the film.
B.All cameras have a sensor.
C.Digital cameras and film cameras have something in common. .
D.Small cameras usually have longer focal lengths.
2.In the “Film cameras” part, you fail to take the picture of the dog because _____.
A.light goes into the camera lens and hits the shutter
B.you haven’t aimed the camera at the dog
C.the image of the dog is not created
D.the sensor fails to convert light and color into a digital information
3.The main reason that sports photographers can get clear and big photos of players is that _ ___.
A.they use digital cameras B.the lens of their cameras is excellent
C.their focus lenses are short D.their focus lenses are long
4.Generally speaking, a digital camera’s price is ____.
A.closely related to the quality of the CCD
B.irrelevant to the quality of the CCD
C.closely related to the lens
D.irrelevant to the lens
高三英语阅读理解中等难度题查看答案及解析
You can take a selfie with a hand - held digital camera or mobile phone and later share it on the Internet. So selfies have been especially popular over the years. 1. Love them or hate them, selfies show no sign of stopping.
After all, the selfie is the most important way to show off on holiday. Everyone has his own way to take the holiday selfies. How can you take the best holiday selfies? 2.
◆‘Food chew’style
Want to let everyone know how exciting your holiday food choices are? 3. You can also cut off a piece to show off what’s inside. But don’t have food hanging out of your mouth. Remember, food always looks best before being eaten.
◆‘I’ m so adventurous’ style
Rock climbing, hiking, surfing, or skiing? 4. Just let the natural settings make people go “wow”. One commonly used gesture is spreading out an arm to show how thrilled you are. But remember that no one likes a sweaty selfie.
◆‘I am cultured tourist’ style
5. You can also try an optical illusion(视错觉)by making it look like you’re holding up the leaning tower of Pisa, touching the top of the Eiffel Tower, or picking the Sphinx’s nose.
A. Just taking a selfie against a famous cultural site makes you look great.
B. Some people have no idea where to travel.
C. According to a recent survey, haft of the interviewees admitted to taking a selfie while on holiday.
D. These adventurous holiday moments are great for a selfie.
E. Different cultures have different characteristics of food.
F. Hold up some food on your fork or chopsticks.
G. Here are some useful posing tips for you.
高三英语其他题中等难度题查看答案及解析
Digital teaching has ______ our way of learning and excited us to focus in class.
A. guaranteed B. revealed
C. evaluated D. transformed
高三英语单项填空中等难度题查看答案及解析
---- Which of these digital cameras do you like best?
---- ______. They are both expensive and of little use.
A. None B. Neither C. Nothing D. No one
高三英语单项填空中等难度题查看答案及解析
Today, in many high schools, teaching is now a technical miracle of computer labs, digital cameras, DVD players and laptops. Teachers can e-mail parents, post messages for students on online bulletin(公告,告示) boards, and take attendance with a quick movement of a mouse.
Even though we are now living in the digital age, the basic and most important element of education has not changed. Most students still need that one-on-one, teacher-student relationship to learn and to succeed. Teenagers need instruction in English, math or history, but they also want personal advice and encouragement. Kids talk with me about their families, their weekend plans, their favorite TV shows and their relationship problems. In my English and journalism classes, we talk about Shakespeare and persuasive(富有哲理的) essays, but we also discuss college basketball, the war in Iraq and career choices. Students show me pictures of their rebuilt cars, their family vacations, and their newborn baby brothers. This personal connection is the necessary link between teachers and students that no amount of technology can improve upon or replace.
A few years ago I had a student in sophomore English who was struggling with my class and with school in general. Although he was a humorous young man who liked to joke around, I knew his family life was far from ideal. Whenever I approached him about missing homework or low test grades, he always had the same reply, “It doesn't matter because I'm quitting school anyway.” Even though he always said this in a half-teasing way, I knew he needed to hear my different opinion and my “value of a high school education” lecture. He needed to hear this speech from me. After he left my class, he struggled through the next two years of school. But, he did finally graduate because we kept telling him to hang in there. We’d cared about him finishing school.
Recently, I saw this former student working at a local Italian restaurant. I told him again how proud I was of him. He said that he was hoping to go back to school to become a certified electrician. I encouraged him to get that training.
Students rely on compassionate teachers to guide, to tutor, to listen, to laugh and to cry with them. Teachers provide the most important link in the educational process—the human one.
1.The first paragraph mainly talks about _____________.
A. the variety of modern teaching methods.
B. the wide use of modern technology in education
C. the importance of teacher-parent relationship.
D. the importance of using modern technology.
2.The underlined word “ compassionate” in Para 5 means ____________.
A. ambitious B. knowledgeable C. sympathetic D. generous
3. According to the text, the most important element in education is _________.
A. teachers’ good instruction B. advanced technology
C. teachers’ encouragement D. personal connection
4.The author states his view of education by __________.
A. example B. description C. figure D. comparison
高三英语阅读理解中等难度题查看答案及解析
Today, in many high schools, teaching is now a technical miracle of computer labs, digital cameras, DVD players and laptops. Teachers can e-mail parents, post messages for students on online bulletin(公告,告示) boards, and take attendance with a quick movement of a mouse.
Even though we are now living in the digital age, the basic and most important element of education has not changed. Most students still need that one-on-one, teacher-student relationship to learn and to succeed. Teenagers need instruction in English, math or history, but they also want personal advice and encouragement. Kids talk with me about their families, their weekend plans, their favorite TV shows and their relationship problems. In my English and journalism classes, we talk about Shakespeare and persuasive(富有哲理的) essays, but we also discuss college basketball, the war in Iraq and career choices. Students show me pictures of their rebuilt cars, their family vacations, and their newborn baby brothers. This personal connection is the necessary link between teachers and students that no amount of technology can improve upon or replace.
A few years ago I had a student in sophomore English who was struggling with my class and with school in general. Although he was a humorous young man who liked to joke around, I knew his family life was far from ideal. Whenever I approached him about missing homework or low test grades, he always had the same reply, “It doesn't matter because I'm quitting school anyway.” Even though he always said this in a half-teasing way, I knew he needed to hear my different opinion and my “value of a high school education” lecture. He needed to hear this speech from me. After he left my class, he struggled through the next two years of school. But, he did finally graduate because we kept telling him to hang in there. We’d cared about him finishing school.
Recently, I saw this former student working at a local Italian restaurant. I told him again how proud I was of him. He said that he was hoping to go back to school to become a certified electrician. I encouraged him to get that training.
Students rely on compassionate teachers to guide, to tutor, to listen, to laugh and to cry with them. Teachers provide the most important link in the educational process—the human one.
1.The first paragraph mainly talks about _____________.
A. the variety of modern teaching methods.
B. the wide use of modern technology in education
C. the importance of teacher-parent relationship.
D. the importance of using modern technology.
2.The underlined word “ compassionate” in Para 5 means ____________.
A. ambitious B. knowledgeable C. sympathetic D. generous
3.According to the text, the most important element in education is _________.
A. teachers’ good instruction B. advanced technology
C. teachers’ encouragement D. personal connection
4.The author states his view of education by __________.
A. example B. description C. figure D. Comparison
高三英语阅读理解中等难度题查看答案及解析
At less than $100 this smart and digital camera is good _______ for money.
A. value B. offer C. price D. currency
高三英语单项填空中等难度题查看答案及解析
At less than $100 this smart and digital camera is good _______ for money.
A. value B. offer C. price D. currency
高三英语单项填空中等难度题查看答案及解析
The performance of this reasonably priced digital camera is _____ in quality to that of more expensive ones.
A. beneficial B. fundamental C. comparable D. competitive
高三英语单项填空中等难度题查看答案及解析
Bob, get this film ______ quickly. I want to know if this camera works well.
A.washed | B.printed | C.shown | D.developed |
高三英语单项填空中等难度题查看答案及解析