《英语四级考试》每日一练（第2015-6-12 期）
2015年6月12日 / 来源：233网校评论
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单项选择题
1、Questions are based on the following passage．
You might think a little global warming is good for farming．Longer，warmner growing seasons and more carbon dioxide（CO2）--what plant wouldn’t love that? The agricultural industry basically agrees on that．But global warming’s effects on agriculture would actually be quite complicated--and mostly not for the better．
It’s true that some crops will prosper on a warmer planet，but the key word there is “some．”According to a government report，higher CO2 levels and longer growing seasons will increase yields for fruit growers in the Great Lakes region．But many major American crops already use CO2 so efficiently that more of it probably won’t make much difference to them．
What will make a difference are all the other things we’ll have more of as temperatures rise—namely droughts（干旱），bugs and big storms．More droughts mean lower crop yields．Melting snow in the Western U．S．will increase water availability in spring but decrease it in summer, forcing farmers to change cropping practices．As insects that eat crops adapt their migration patterns to our warmer climate，farmers will have to either use more insecticide or plant hardier crops．
Farmers on both coasts are already starting to reap some of what the nation’s fossil-fuel addiction has sown．Crops in those regions require a certain number of colder days，or ‘‘winter chill’’ before they break dormancy（冬眠）and begin flowering．Too few cold days breaks the plants’ flowering schedule which in turn affects pollination（授粉）and hurts yield．
So, given how much is at stake for them，how are farm states working to shape climate legislation? In response to agricultural demands，the Waxman-Markey bill frees the agricultural industry from CO2 emission limits and gives up control over what activities guarantee carbon offset credit to the Agricultural Department．
Some farmers--and some farm state congressional leaders--have argued that because plants convertC02 into oxygen，agricultural lands store more CO2 than they emit．This is only theoretically true．What we can say with certainty is that，like most big industries，farming is fossil-fuel intensive--large quantities of CO2 are emitted from farm equipment such as irrigation pumps and tractors．
Under the influence of global warming, the yields of American crops will __________．
A．be greatly enhanced
B．be certainly reduced
C．still remain stable
D．be hard to predict
2、
I Cry, Therefore I Am
A) In 2008, at a German zoo, a gorilla (大猩猩) named Gana gave birth to a male infant, who died after three months． Photographs of Gana, looking stricken and inconsolable (伤心欲绝的), attracted crowds to the zoo． Sad as the scene was, the humans, not Gana, were the only ones crying． The notion that animals can weep has no scientific basis． Years of observations by biologists Dian Fossey, who observed gorillas, and Jane Goodall, who worked with chimpanzees (黑猩猩), could not prove that animals cry tears from emotion．
B)It's true that many animals shed tears, especially in response to pain． Tears protect the eye by keeping it moist． But crying as an expression of feeling is tmique to humans and has played an essential role in human evolution and the development of human cultures．
C)Within two days an infant can imitate sad and happy faces． If an infant does not cry out, it is unlikely to get the attention it needs to survive． Around 34 months, the relationship between the human infant and its environment takes on a more organized commtmicative role, and tearful crying begins to serve interpersonal purposes: the search for comfort and pacification (抚慰)． As we get older, crying becomes a tool of social interaction: grief and joy, shame and pride, fear and
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1、Questions are based on the following passage．
You might think a little global warming is good for farming．Longer，warmner growing seasons and more carbon dioxide（CO2）--what plant wouldn’t love that? The agricultural industry basically agrees on that．But global warming’s effects on agriculture would actually be quite complicated--and mostly not for the better．
It’s true that some crops will prosper on a warmer planet，but the key word there is “some．”According to a government report，higher CO2 levels and longer growing seasons will increase yields for fruit growers in the Great Lakes region．But many major American crops already use CO2 so efficiently that more of it probably won’t make much difference to them．
What will make a difference are all the other things we’ll have more of as temperatures rise—namely droughts（干旱），bugs and big storms．More droughts mean lower crop yields．Melting snow in the Western U．S．will increase water availability in spring but decrease it in summer, forcing farmers to change cropping practices．As insects that eat crops adapt their migration patterns to our warmer climate，farmers will have to either use more insecticide or plant hardier crops．
Farmers on both coasts are already starting to reap some of what the nation’s fossil-fuel addiction has sown．Crops in those regions require a certain number of colder days，or ‘‘winter chill’’ before they break dormancy（冬眠）and begin flowering．Too few cold days breaks the plants’ flowering schedule which in turn affects pollination（授粉）and hurts yield．
So, given how much is at stake for them，how are farm states working to shape climate legislation? In response to agricultural demands，the Waxman-Markey bill frees the agricultural industry from CO2 emission limits and gives up control over what activities guarantee carbon offset credit to the Agricultural Department．
Some farmers--and some farm state congressional leaders--have argued that because plants convertC02 into oxygen，agricultural lands store more CO2 than they emit．This is only theoretically true．What we can say with certainty is that，like most big industries，farming is fossil-fuel intensive--large quantities of CO2 are emitted from farm equipment such as irrigation pumps and tractors．
Under the influence of global warming, the yields of American crops will __________．
A．be greatly enhanced
B．be certainly reduced
C．still remain stable
D．be hard to predict
2、
I Cry, Therefore I Am
A) In 2008, at a German zoo, a gorilla (大猩猩) named Gana gave birth to a male infant, who died after three months． Photographs of Gana, looking stricken and inconsolable (伤心欲绝的), attracted crowds to the zoo． Sad as the scene was, the humans, not Gana, were the only ones crying． The notion that animals can weep has no scientific basis． Years of observations by biologists Dian Fossey, who observed gorillas, and Jane Goodall, who worked with chimpanzees (黑猩猩), could not prove that animals cry tears from emotion．
B)It's true that many animals shed tears, especially in response to pain． Tears protect the eye by keeping it moist． But crying as an expression of feeling is tmique to humans and has played an essential role in human evolution and the development of human cultures．
C)Within two days an infant can imitate sad and happy faces． If an infant does not cry out, it is unlikely to get the attention it needs to survive． Around 34 months, the relationship between the human infant and its environment takes on a more organized commtmicative role, and tearful crying begins to serve interpersonal purposes: the search for comfort and pacification (抚慰)． As we get older, crying becomes a tool of social interaction: grief and joy, shame and pride, fear and
