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Warmer climate will bake tropical bugs
Global warming could cook tropical insects, with unpredictable knock-on effects, say researchers who warn that rising temperatures also_____(51)tropical frogs and lizards(蜥蜴).
Temperatures are_____(52)to increase much faster in temperate(温和的)and polar(极地的)regions than in the tropics. But no-one had looked at how warming would affect insects and other cold-blooded animals_____(53)had evolved in tropical regions with little temperature variation.
Curtis Deutsch at the University of California at Los Angeles and colleagues analysed data_____(54)insect survival and reproduction for 38 species in different ecosystems(生态系统), and then estimated how these values would_____(55)with predictions of climate change for the 21st century.
The team found that the reproductive_____(56)of tropical insects tends to peak very close to the temperatures where they normally live, but_____(57)sharply at higher temperatures. This means that cranking up(提高)the heat only a small amount can exert a heavy toll, leaving insects unable to reproduce_____(58)enough to keep up their numbers.
Temperate insects reproduce well over a broader range, and do not live as_____(59)to their thermal(热的)limit, so they can reproduce successfully when their climate warms more than in the tropics.
"Tropical insects do very well in a narrow band of temperatures, but move them above that_____(60)and they die," says team member Josh Tewksbury of the University of Washington in Seattle.
The heart of the_____(61)is temperature tolerance. Temperate-zone insects have evolved to survive the much broader temperature swings of seasonal climates, than have their tropical relatives.
The_____(62)appears worse for animals that live in hot stable climate of the lower levels of tropical forests. Lizards in clear areas can find shade to cool down, but those living in the forest are already in the_____(63), and there's not much they can do to get cooler, Deutsch says.
Too few tropical insects have been studied so far to_____(64)if any particular group will be particularly hard-hit, says Tewksbury. Insects play important_____(65)in forest ecology(生态学).
The team are now starting to evaluate how temperature affects ecological interactions of insects with other species, including crops such as African corn.
文章(51~65)
_____
A.treat
B.threaten
C.help
D.protect
Global warming could cook tropical insects, with unpredictable knock-on effects, say researchers who warn that rising temperatures also_____(51)tropical frogs and lizards(蜥蜴).
Temperatures are_____(52)to increase much faster in temperate(温和的)and polar(极地的)regions than in the tropics. But no-one had looked at how warming would affect insects and other cold-blooded animals_____(53)had evolved in tropical regions with little temperature variation.
Curtis Deutsch at the University of California at Los Angeles and colleagues analysed data_____(54)insect survival and reproduction for 38 species in different ecosystems(生态系统), and then estimated how these values would_____(55)with predictions of climate change for the 21st century.
The team found that the reproductive_____(56)of tropical insects tends to peak very close to the temperatures where they normally live, but_____(57)sharply at higher temperatures. This means that cranking up(提高)the heat only a small amount can exert a heavy toll, leaving insects unable to reproduce_____(58)enough to keep up their numbers.
Temperate insects reproduce well over a broader range, and do not live as_____(59)to their thermal(热的)limit, so they can reproduce successfully when their climate warms more than in the tropics.
"Tropical insects do very well in a narrow band of temperatures, but move them above that_____(60)and they die," says team member Josh Tewksbury of the University of Washington in Seattle.
The heart of the_____(61)is temperature tolerance. Temperate-zone insects have evolved to survive the much broader temperature swings of seasonal climates, than have their tropical relatives.
The_____(62)appears worse for animals that live in hot stable climate of the lower levels of tropical forests. Lizards in clear areas can find shade to cool down, but those living in the forest are already in the_____(63), and there's not much they can do to get cooler, Deutsch says.
Too few tropical insects have been studied so far to_____(64)if any particular group will be particularly hard-hit, says Tewksbury. Insects play important_____(65)in forest ecology(生态学).
The team are now starting to evaluate how temperature affects ecological interactions of insects with other species, including crops such as African corn.
文章(51~65)
_____
A.treat
B.threaten
C.help
D.protect
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解析：
更多 “Warmer climate will bake tropical bugs Global warming could cook tropical insects, with unpredictable knock-on effects, say researchers who warn that rising temperatures also_____(51)tropical frogs and lizards(蜥蜴). Temperatures are_____(52)to increase much faster in temperate(温和的)and polar(极地的)regions than in the tropics. But no-one had looked at how warming would affect insects and other cold-blooded animals_____(53)had evolved in tropical regions with little temperature variation. Curtis Deutsch at the University of California at Los Angeles and colleagues analysed data_____(54)insect survival and reproduction for 38 species in different ecosystems(生态系统), and then estimated how these values would_____(55)with predictions of climate change for the 21st century. The team found that the reproductive_____(56)of tropical insects tends to peak very close to the temperatures where they normally live, but_____(57)sharply at higher temperatures. This means that cranking up(提高)the heat only a small amount can exert a heavy toll, leaving insects unable to reproduce_____(58)enough to keep up their numbers. Temperate insects reproduce well over a broader range, and do not live as_____(59)to their thermal(热的)limit, so they can reproduce successfully when their climate warms more than in the tropics. "Tropical insects do very well in a narrow band of temperatures, but move them above that_____(60)and they die," says team member Josh Tewksbury of the University of Washington in Seattle. The heart of the_____(61)is temperature tolerance. Temperate-zone insects have evolved to survive the much broader temperature swings of seasonal climates, than have their tropical relatives. The_____(62)appears worse for animals that live in hot stable climate of the lower levels of tropical forests. Lizards in clear areas can find shade to cool down, but those living in the forest are already in the_____(63), and there's not much they can do to get cooler, Deutsch says. Too few tropical insects have been studied so far to_____(64)if any particular group will be particularly hard-hit, says Tewksbury. Insects play important_____(65)in forest ecology(生态学). The team are now starting to evaluate how temperature affects ecological interactions of insects with other species, including crops such as African corn. 文章(51~65) _____ A.treat B.threaten C.help D.protect” 相关考题
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共用题干
第一篇Is Global Warming Good for Farming?You might think a little global warming is good for farming. Longer,warmer growing seasonsand more carbon dioxide(CO2）一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一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 or as temperatures rise一namely droughts（干旱）,bugs and big storms. More droughts mean lower crop yields. Melting snow in the Western US 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一and some farm state congressional leaders一have argued that because plants convert CO2 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一large quantities of CO2 are emitted from farm equipment such as irrigation pumps and tractors.What is the result of"the nation's fossil-fuel addiction"on both coasts?A:Plants yield decreases due to shortened winter chill.B:Plants yield without dormancy and flowering.C:Crops require longer winter chill than before.D:The yields are no longer influenced by the climate.
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共用题干
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The northern part of the Australia has a tropical climate with only two seasons，and the dry season lasts from( ). A.January to June
B.July to November
C.November to April
D.May to October
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单选题What is the direction of rotation of tropical cyclones,tropical storms and hurricanes in the Northern Hemisphere?（）A
Clockwise and outwardB
Counterclockwise and inwardC
Counterclockwise and outwardD
Clockwise and inward
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单选题Possessing beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.A
Possessing beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.B
Based on having beautiful beaches and a temperate climate, the Virgin Islands attract tourists in large numbers.C
Since it has beautiful beaches and a temperate climate, tourists flock to the Virgin Islands in large numbers.D
The Virgin Islands, which possess beautiful beaches and a temperate climate, attract tourists in large numbers.E
Tourists who value beautiful beaches and a temperate climate may flock to the Virgin Islands in large numbers.
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多选题Consider each of the choices separately and select all that apply. Which of these can be inferred from the fact that the French built orangeries for certain tropical plants?AGreenhouses may be used to keep plants at a moderate temperatureBThe climate of France is unsuited to growing tropical plants outdoors.CLouis ⅩⅣ was a frequent and enthusiastic traveler to Africa and Asia
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单选题运行checksetup.pl后，系统生成localconfig文件，以下为其中几行内容，请说出哪句为BUG数据库的名称？（）A
$db_host=“localhost“；B
$db_port=3306；C
$db_name=“bugs“；D
$db_user=“bugs。
考题
问答题Not so long ago, people talked about global warming in apocalyptic terms—imagining the Statue of Liberty up to its chin in water or an onslaught of tropical diseases in Oslo. Recently, however, advances in our understanding of climate have moved global warming from a subject for a summer disaster movie to a serious but manageable scientific and policy issue. The greenhouse effect is nothing new; it has been operating ever since the earth formed. Without it, the surface of the globe would be a frigid –20 ℃ (–4 °F), the oceans would have frozen, and no life would have developed.
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单选题Australia is a large island continent in the southern hemisphere with a diverse range of climate zones. These vary from _____ in the north through the arid expanses of the interior to temperate regions in the south.A
sub-tropical regionsB
tropical regionsC
sub-temperate regionsD
rainforest regions
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单选题Which is the winter load waterline on the load waterline mark?（）.A
The line over the summer load waterlineB
The line above the tropical load waterlineC
The line below the tropical load waterlineD
The line between the summer and the winter north Atlantic load waterline
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单选题OWING TROPICAL STORM9706 CROSSING OUR/COURSE PLSPERMIT SHELTERING KAGOSHIMA KAIWAN. This cable indicates that（）.A
she requested shelter permissionB
she intended to berth at port of KAGOSHIMAC
she intended to change her courseD
she was reporting to the port that a tropical storm is coming
考题
名词解释题bugs
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