(D)
Throughout the nineteenth century and into the twentieth, citizens of the
(E)
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 open 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 light and colour 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. 72. Which of the following statements is TRUE? A. Both digital cameras and film cameras focus light onto the film at the back of the camera. B. All cameras have a sensor. C. Digital cameras and film cameras have something in common. . D. Small cameras usually have longer focal lengths. 73. 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 colour into a digital information 74. 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 75. 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 第二卷 (二部分,共35分) 第一节 请认真阅读下面对话,并根据各题所给首字母的提示,在方框的右栏标有题号的横线上, 写出一个英语单词的完整、正确的形式,使对话通顺。| Jack(J):Where have you been, Laura? Laura(L): Oh, I’ve just been to a s 76 made | 76_________________ |
| by a famous p 77 from |
77_________________ |
| J: What is it about? L: He mentioned something c 78 the concept of “harmonious society” in his speech. | 78_________________ |
| J: Oh, that’s something people keep t 79 about nowadays! Then what did he say about it? | 79_________________ |
| L: He said that we should not only get a 80 well with other people, but also live in harmony with n 81 . | 80_________________ 81_________________ |
| J: I’m in complete a 82 with him. While developing | 82_________________ |
| the economy, we are i 83 with the ecology. | 83_________________ |
| L: Yes. It’s high time we considered doing something to improve the environment p 84 by human beings. | 84________________ |
| J: Hopefully, our government is taking m 85 to deal with the consequences. | 85________________ |
| Why | How |
| 资源有限:水,石油,森林等…… 环境恶化:灾害性天气频繁,空气,水污染,水土流失等……. | 节约:事物,水,纸,电…… 乘公共汽车,拒绝使用方便筷,塑料袋….. |
Save in everyday life
参考答案 单项填空 21-25 CDCCB 26-30 DBDBA 31-35 BADBA 完形填空 36-40 CBACA 41-45 BAACB 46-50 ADADD v51-55 AADAA 阅读理解 56-60 CBABA 61-65 CBBBC 66-70 CBDBB 71-75 DCCDA 短文对话填空: 76 speech 77 professor 78.concerning 79. talking 80. along 81. nature 82. agreement 83. interfering 84. polluted 85. measures As a middle school student, we should take an active part in creating a society that saves. On one hand, the natural resources are limited. We don’t have enough water ,oil or forest in many places. On the other hand ,people keep cutting down more trees . At the same time, everyone can see that the environment is getting worse, people suffer from more natural disasters nowadays. What is worse, air and water pollution is becoming more and more serious. In my opinion, we students should do something to stop wasting. We can save food, water, and paper, electricity, etc, in our daily life. Meanwhile, we should take buses instead of cars, refuse to use chopsticks which are only used once and don’t use plastic bags.