Farmers have long used such as irrigation to increase production. 查看更多

 

题目列表(包括答案和解析)

In recent years, the black bear population in the US has risen. Forests once cleared for farming have started to grow back and black bears have returned to them. But the bears are finding that their forest habitat has changed. Instead of thick forests covering thousands of acres, bears now have neighbors nearby. Roads, homes, schools, and shopping centers have been built at the edge of their forest home. And with humans and bears trying to share the same space, problems arise.

Black bears usually prefer to avoid people, but their nose may lead them into trouble. Their normal diet includes nuts, insects, and plants. But given the opportunity, they will gladly help themselves to whatever they can find.

With the great sense of smell, the bears can sniff out a tasty treat 2 or 3 miles away. Food left out in a park or backyard is an invitation to dinner. And while raiding (劫掠) a cooler, bird feeder (喂鸟器), trash can, car, or even a home, they can do a lot of damage. When that happens, people get angry. If another solution doesn’t immediately appear, they often want the bears killed.

Bear Aware, Bear Wise, and Bear Smart are trying to keep that from happening. They want people to respect bears, not fear them, and are suggesting ways to reduce the chances of bears stopping by for a snack. They’re convincing (使相信) people that by following some simple steps, it’s possible to live peacefully with our wild neighbors.

1.More black bears have appeared in the US because__________.

A.farmers have grown more food

B.forests have increased in the US

C.people stopped killing black bears

D.roads were built nearer to the forests

2.We learn from the text that black bears _________.

A.hate insects in forests                    B.eat different foods

C.usually live in big groups                  D.like to share space with humans

3.The underlined words “sniff out” in Paragraph 3 probably means “________”.

A.to express a low opinion                  B.to find something by chance

C.to refuse something in a proud way          D.to discover something by its smell

 

查看答案和解析>>

Dan Bebber is a senior research fellow at the University of Exeter in Britain. He says research has shown that wild plants and animals are moving toward Earth's North and South poles as the planet warms.

Mr Bebber wanted to know if the same thing was happening with organisms that attack agricultural crops. He examined reports of first sightings of new insects and diseases around the world. The records came from CABI - the Centre for Agricultural Bioscience International. He says the group began collecting information from developing and industrialized countries years ago.

Dan Bebber and his research team studied 612 different organisms - from viruses and bacteria to insects like beetles and butterflies. They found that since 1960, crop pests and diseases have been moving toward the poles at an average rate of about 3 kilometers each year. Mr Bebber says this puts the most productive farmland in the world in danger.

"As new species of pests and diseases evolve and potentially the environment for them becomes more amenable at higher latitudes, the pressure on the breadbaskets of the world is going to increase."

Farmers face other threats. Invasive species passed through trade are also causing problems. Gene Kritsky is an Entomologist at the College of Mount St. Joseph in Ohio. He specialises in the study of insects. He says climate change may improve conditions for some invasive species.

“It means that species in other parts of the world that might do well in warmer temperatures can now do well in the breadbasket of America.”

Another Entomologist Christian Krupke of Purdue University says the effects of these changes will depend very much on the crop, the insect and the disease. But he says the research is a warning sign that people should care about climate change and do something about it.

1.The purpose of Dan Bebber’s research was to find ______.

A. if farmland could be moved to colder places thanks to global warming

B. if diseases and insects harmful to crops were going towards colder areas

C. if organisms were moving to the north and south poles

D. if the number of crop pests was increasing

2.According to Dan Bebber, if crop pests keep moving towards the poles, ______.

A. it will be hard for farmers to kill them

B. the most productive farmland will produce more crops

C. the earth will not produce enough food to support the world

D. the conditions for some crops may be improved

3.Which of the following is not a threat that farmers have to face?

A. Climate change helps crop pests to adapt to new environment.

B. Foreign species are brought in by trade.

C. Invasive species doing well in warmer places might do well in America.

D. The impacts of the climate and species changes on crops are not easy to determine.

4.The underlined word “amenable” in the fourth paragraph most probably means ______.

A. agreeable     B. terrible      C. unfriendly     D. changeable 

 

查看答案和解析>>

The website FarmersOnly.com calls itself an online dating and friendship finder. The idea started in the mind of a man, Jerry Miller in Ohio. He wondered how farmers could meet new people who understand the life of a farmer. Jerry Miller is not a farmer but he represents a lot of farmers.
As he tells it, the idea for the site was planted when a farmer told him one day that she was recently divorced and would like to date. But someone would invite her to meet for coffee at nine o’clock at night, when she had to start her day at five the next morning.
So, in 2005, Jerry Miller launched his website. “You don’t have to be a farmer to be on FarmersOnly.com, but you do have to have the good old-fashioned traditional values of America’s Heartland.” 
You also have to live in the United States or Canada to be a member of the site. Some services are free, but a full membership costs fifty dollars for a year. As of last week the site listed more than 58,000 members. Many of them are farmers in the United States. Others are students or workers involved in some way with agriculture. Jerry Miller tells us about thirty marriages in the last year have resulted from his website.
Some farmers have also found love through a group, Singles in Agriculture, which was formed as a nonprofit organization in 1986. It organizes gatherings that usually end with a dance, but is not a dating service. The purpose is to support educational and social activities that offer people a chance for friendship. Its website, singlesinag.org, says there are more than 1,000 members across the nation and as far away as France.
【小题1】Jerry Miller started singlesinag.org in order to     .

A.help farmersB.support traditions
C.understand farmersD.represent farmers
【小题2】What does the underlined sentence in Paragraph 2 indicate?
A.She dislikes city lifestyle.
B.She prefers late night coffee.
C.Country life isn’t well understood.
D.It’s tiring to get up early.
【小题3】Which of the following is true of singlesinag.org?
A.Its services are free.
B.It provides dating services.
C.Only farmers can become its members.
D.Farmers in France can’t benefit from it.
【小题4】The author of the text intends to     .
A.advertise for the two websites
B.introduce two websites
C.encourage social activities
D.urge readers to help farmers
【小题5】It can be inferred from the text that     .
A.all farmers desire marriage
B.farmers are easy to meet new people
C.more farmers get divorced in the USA
D.the Internet helps improve farmers’ social life

查看答案和解析>>

     by a greater demand of vegetables, farmers have built more green houses


  1. A.
    Driven
  2. B.
    Being driven
  3. C.
    To drive
  4. D.
    Having driven

查看答案和解析>>

Farmers have turned to _____deer because it can make a lot of money.

A.keep           B.keeping   C.make            D.making

查看答案和解析>>


同步练习册答案