网址：http://m.1010jiajiao.com/timu3_id_3135717[举报]
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 the 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.
59. Most people usually use the GPS system for ______.
A. driving their cars
B. telling the position
C. mending the car
D. supplying the sunshine
60. 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
61. 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.
62. 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.
查看习题详情和答案>>
听力
第一节(共5小题；每小题1分，满分5分)
听下面5段对话，每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题，每段对话仅读一遍。
1．When is Jessica's Birthday?
A．Sep．8．
B．Sep．9．
C．Sep．10．
2．Which hotel does the man live in now?
A．China Great Hotel．
B．Holiday Inn．
C．Hilton．
3．Why will the woman not go to the zoo tomorrow?
A．The man's son is too young．
B．She will attend a meeting tomorrow．
C．It'll snow heavily．
4．Where does the conversation take place most probably?
A．At a bus stop．
B．At a railway station．
C．In a bank．
5．When did the man arrive?
A．8∶00．
B．8∶30．
C．8∶45．
第二节(共15小题；满分15分)
听下面6段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前。你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料，回答第6－7题。
6．What's the relationship between the two speakers?
A．Teacher and student．
B．Boss and employee．
C．Husband and wife．
7．What happened to the man?
A．He failed his final test．
B．He was out of work．
C．He gave the students a hard final．
听第7段材料，回答第8－9题。
8．What's the probable relationship between the two speakers?
A．Salesperson and customer．
B．Old school friends．
C．Fellow workers．
9．What do we know about the woman in the dialogue?
A．She is fond of her work．
B．She's tired of traveling．
C．She is interested in law．
听第8段材料，回答第10－11题。
10．Why does the man want to talk to Dr．Perkins on the phone?
A．To discuss something with the doctor．
B．To ask Dr．Perkins to give a lecture．
C．To see him about his illness．
11．What is the doctor doing at the moment?
A．Giving an operation．
B．Giving a lecture．
C．Having a meeting．
听第9段材料，回答第12－14题。
12．Why does the man want to hire a car?
A．To go and see his friends．
B．To visit the city．
C．To go shopping．
13．What is the rental money for a Santana?
A．400 yuan a day．
B．300 yuan a day．
C．200 yuan a day．
14．Which of the following is true according to the conversation?
A．The man is on holiday in Shanghai．
B．The man has decided to hire a Santana for 3 days．
C．Jettas are the most popular with the tourists．
听第10段材料，回答第15－17题。
15．Where does the conversation take place?
A．At an airport．
B．On a plane．
C．At a duty free shop．
16．What does the man think of the prices of the items in the duty-free shop?
A．Very high．
B．Low．
C．A little high．
17．Which of the following is right?
A．The man is from the States．
B．The man has arrived in a foreign country．
C．It took him a long time to get through the Immigration
听第11段材料，回答第18－20题。
18．What can we learn about the radio station?
A．It is owned by the English Coffee Shop．
B．It is on Montana at Seventh Street in Santa Monica．
C．It sells advertising time．
19．What will the weather be like?
A．Cloudy
B．Cold
C．Fine
20．What can we learn about Santa Monica Beach?
A．It is a good place for parking cars．
B．It is a good place for surfing．
C．It is a good place for swimming．
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
, or is“showing off”by speeding or breaking other traffic laws．Mothers of victims(受害者)of such accidents have formed an organization called MADD(Mother Against Drunk Driving)．These women want to prevent further tragedies(悲剧)．They have worked to encourage the government to limit the youngest drinking age．Students have formed a similar organization, SADD(Students Against Drunk Driving)and are spreading the same message among their friends．听力
第一节
(共5小题：每小题1分)听下面
5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。1．How long ago did the man leave home?
A．30 minutes
B．60 minutes
C．90 minutes
2．What does Jack usually do after school?
A．Read books
B．Play computer games．
C．Do his homework．
3．Why didn't the man sleep well last night?
A．Because he had a fever．
B．Because his baby was ill．
C．Because his dog was ill．
4．What is the daughter doing?
A．Perhaps she is playing．
B．Perhaps she is sleeping．
C．Perhaps she is reading books．
5．What can we learn from the dialogue?
A．The wind stopped, but it's still raining．
B．The rain has stopped．
C．It's still raining, and the wind is blowing．
第二节(共15小题：每小题1分)
听下面
5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟：听完后，各个小题将给出5秒钟的作答时间。每段对话或独白读两遍。听下面一段材料，回答
6～8题．6．What might have happened?
A．An earthquake
B．A fire
C．A gas accident．
7．Why didn't the woman go out of the house?
A．She was too afraid to move．
B．She worried about the valuable things at home．
C．She couldn't find the way．
8．Where was the woman at the beginning?
A．In the bathroom．
B．In the bedroom．
C．In the kitchen．
听下面一段材料，回答9－11题．
9．Who is Bengi?
A．A tiger．
B．A bear．
C．A lion．
10．Why do people attack Bengi?
A．They want him to be their pet．
B．They want his fur and bones．
C．They want to eat him．
11．What will they do then?
A．Take measures to protect Bengi．
B．Work together to save Bengi．
C．Write to the government．
听下面一段材料，回答12－14题．
12．Why did the man make an apology to the woman?
A．For he broke his promise．
B．For he couldn't go back home．
C．For he had to go to see a film．
13．What promise did he make to the woman?
A．To go home together this weekend．
B．To go to see a film this weekend．
C．To go to see her family．
14．Why couldn't he keep his promise?
A．Because he had to do extra work．
B．Because he had to go home．
C．Because he had to see a film．
听下面一段材料，回答15－17题．
15．When will they leave?
A．At 10∶00．
B．At 10∶30．
C．At 11∶00．
16．How will they go?
A．By bus．
B．By taxi．
C．By car．
17．What's the man?
A．He is a driver．
B．He is a teacher．
C．He is a doctor．
听下面一段材料，回答18－20题．
18．What can we learn about the radio station?
A．It's owned by the English Coffee Shop．
B．It's on Montana at Seventh Street in Santa Monica．
C．It sells advertising time．
19．What will the weather be like?
A．Cloudy．
B．Cold．
C．Fine．
20．What can we learn about Santa Monica Beach?
A．It's a good place for parking cars．
B．It's a good place for surfing．
C．It's a good place for swimming．
already and ______ about 275 cars a day.