59. D 推理判断题 根据文章第三段第三句“When you look at the total number of acres in Ohio used for corn, it’s clear that farmers are able to do more with less可知玉米的产量提高了。

Passage 9

(陕西省太原五中2010届高三下学期五月月考D篇)

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.

58. B 推理判断题 根据文章第一段第二句Technological advances like that last year helped Davis and other Ohio farmers set a record for corn product.可知是科技进步让他们的产量更高；另外文章的第三段的saying that modern farming techniques are necessary for a growing demand in the world today.”也是明确的暗示。

57. A 细节理解题 根据文章第二段第一句spotting where soil turned out to be least fertile and using more fertilizer the next year in those areas where corn didn’t grow as well可知农民要用GPS来测土壤是否肥沃。故该题的正确答答案为A。

56. B 推理判断题 根据文章第一段第一句John Davis doesn’t use his GPS system in his car. Instead of guiding the direction可以推知人们用GPS来“指引方向”，也就是用来判断位置。

59. From the passage, we can know _____.[

　 　A. John Davis hadn’t expected a good harvest.

　　 B. farmers grew less land than in the 1930s

　 　C. improved seeds cost much more money

　 　D. the output of corn in the same field is increased.

答案：

58. Why did Ohio farmers produce more corn?

　 　A. Because they expanded more land to grow corn

　 　B. Because they turned to technological advances

　 　C. Because they used more and more fertilizer.

　 　D. Because they supplies themselves with more money.

57. The farmers in Ohio use GPS to ______.

　 　A. check if the soil is fertile in some areas　　　 　　　　　　　　 B. control the rain of the place

　 　C. water the crops if the weather is dry　 　　　　　　　　　　　　　　　　　　　　 D. draw the map of all the crops

56. Most people usually use the GPS system for ______.

　 　A. driving their cars　　 B. telling the position 　C. mending the car　 　D. supplying the sunshine

71.Which may be the best title for the passage?

　　 A. U.S. Texting Raises $11 Million for Haiti Earthquake

　　 B. An Unexpected Terrible Earthquake Hit Haiti

　　 C. The American Red Cross Offers Help to Haiti

　　 D. Wireless Carriers Donate $11 Million to Haiti

答案：68-71 BCDA

Passage 8

(山东省临沭县2010届普通高等学校招生考试打靶试题A篇)

John Davis doesn’t use his GPS system in his car. Instead of guiding the direction, the Delaware farmer uses it to determine where and how much fertilizer to use on the crops on his 4,000-acre family-owned farm. Technological advances like that last year helped Davis and other Ohio farmers set a record for corn product. Ohio's corn crop in 2009 totaled 546 million bushels(蒲式耳), despite a cooler and wetter than normal spring, a dry summer and a delayed, wet harvest. Davis said. “I knew it would be a good crop, but it was much better than we expected.”

A farmer can map his fields on GPS, spotting where soil turned out to be least fertile(肥沃的) and using more fertilizer the next year in those areas where corn didn’t grow as well.

Although Ohio farmers produced more corn, it was grown on less land than in past years. Total area used for corn in Ohio was 3.35 million acres, about the same as in 2008 but down from 3.85 million acres in 2007, said Dwayne Siekman, director of the Ohio Corn Growers Association. “When you look at the total number of acres in Ohio used for corn, it’s clear that farmers are able to do more with less,” he said. “American farmers can grow five times more corn on 20 percent less land than they did in the 1930s, saying that modern farming techniques are necessary for a growing demand in the world today.” That technology includes using improved seeds that can withstand(忍受) greater temperature extremes and pests, Siekman said.

Farmers aren't the only ones who benefit. Consumers(消费者) do, too, as food costs reduce in the face of “enough supplies of corn,” said Fred Yoder, who runs a 1,500-acre corn, soybean and wheat farm in Plain City. “This is the best, highest-producing corn crop that I've raised in 30 years,” he said.

70. Which of the following statements is TRUE according to the passage?

　　 A. Facebook and Twitter are two relief organizations from the USA.

　　 B. Many American politicians force Americans to give donations to Haiti.

　　 C. The American Red Cross expected to receive much more donations.

　　 D. Carriers have promised not to take a share from the donation.