Although many butterflies remain to be decreasing in the long run, last year three quarters of endangered species saw an increase in number, including some rare species.
Experts said the improvement in the butterflies’ fortunes was likely to be the result of effective action on protection, such as leaving open wetland in woods where flowers can grow, and better weather in 2010 after three damaging wet summers.
Dr Tom Brereton said butterflies are extremely sensitive to changes in the weather. Last year saw a warm summer for successful feeding, which helped a number of butterflies in some way.
He even said climate change could be benefiting some butterfly species but many other butterfly species suffer from it. For example, the mountain ringlet suffers as it needs cold climates. And at the same time, the change is too rapid for most to get used to.
In the long run butterfly numbers have continued to drop, with three quarters of the nearly 60 species found in Britain seeing numbers fall in recent decades and nearly half of them seriously threatened.
The Lulworth skipper, one of the UK’s rarest butterflies, had its worst year since 1976, and there are people worrying that changing the environment to benefit other species may be harming this kind of butterfly. Wild flowers have been grown in some places to help other butterflies but the Lulworth skipper needs long grass and wild areas. Meadow browns, the country’s most common species, also had the worst year on record. Some other kinds of butterflies also had a bad year.
However, in the short term many butterflies saw an increase in number in 2010 compared to 2009 levels.
…
1.Which was a reason for the increase in the number of the butterflies last year?
A.The protection of humans. B. A wet summer.
C.Changes in the butterflies’ habits. D. The decrease in wetland in woods.
2.We can learn from Dr Tom Brereton’s words that ________.
A.the mountain ringlet can quickly adapt to climate change
B.butterflies can help slow down climate change
C.climate change can be both beneficial and harmful to butterflies
D.other kinds of animals also suffer from climate change
3.What is most likely to be discussed in the following paragraph?
A.Why some butterflies decreased in number in 2010.
B.How to protect butterflies in the coming winter.
C.Effects of climate change on butterflies.
D.Examples of butterflies that have increased in number.
4.What is the passage mainly about?
A.Some butterflies in Britain have had a good year.
B.Butterflies in Britain have different habits.
C.Butterflies are well protected in Britain.
D.Butterflies are disappearing from Britain.
高三英语阅读理解中等难度题
Although many butterflies remain to be decreasing in the long run, last year three quarters of endangered species saw an increase in number, including some rare species.
Experts said the improvement in the butterflies’ fortunes was likely to be the result of effective action on protection, such as leaving open wetland in woods where flowers can grow, and better weather in 2010 after three damaging wet summers.
Dr Tom Brereton said butterflies are extremely sensitive to changes in the weather. Last year saw a warm summer for successful feeding, which helped a number of butterflies in some way.
He even said climate change could be benefiting some butterfly species but many other butterfly species suffer from it. For example, the mountain ringlet suffers as it needs cold climates. And at the same time, the change is too rapid for most to get used to.
In the long run butterfly numbers have continued to drop, with three quarters of the nearly 60 species found in Britain seeing numbers fall in recent decades and nearly half of them seriously threatened.
The Lulworth skipper, one of the UK’s rarest butterflies, had its worst year since 1976, and there are people worrying that changing the environment to benefit other species may be harming this kind of butterfly. Wild flowers have been grown in some places to help other butterflies but the Lulworth skipper needs long grass and wild areas. Meadow browns, the country’s most common species, also had the worst year on record. Some other kinds of butterflies also had a bad year.
However, in the short term many butterflies saw an increase in number in 2010 compared to 2009 levels.
…
1.Which was a reason for the increase in the number of the butterflies last year?
A.The protection of humans. B. A wet summer.
C.Changes in the butterflies’ habits. D. The decrease in wetland in woods.
2.We can learn from Dr Tom Brereton’s words that ________.
A.the mountain ringlet can quickly adapt to climate change
B.butterflies can help slow down climate change
C.climate change can be both beneficial and harmful to butterflies
D.other kinds of animals also suffer from climate change
3.What is most likely to be discussed in the following paragraph?
A.Why some butterflies decreased in number in 2010.
B.How to protect butterflies in the coming winter.
C.Effects of climate change on butterflies.
D.Examples of butterflies that have increased in number.
4.What is the passage mainly about?
A.Some butterflies in Britain have had a good year.
B.Butterflies in Britain have different habits.
C.Butterflies are well protected in Britain.
D.Butterflies are disappearing from Britain.
高三英语阅读理解中等难度题查看答案及解析
(2013·泰安模拟)Although to be the best in a recent science competition, the student remains modest.
A. judged B. judging
C. judge D. having judged
高三英语单项填空中等难度题查看答案及解析
Although _______ to be the best in a recent science competition, the student remains modest.
A. judging B. judged
C. judge D. having judged
高三英语单项填空困难题查看答案及解析
A butterfly's wings can have many jobs besides keeping the insect in the air. They may be called on to attract mates, to warn potential enemies to stay away, to do other animals or even to provide disguise(伪装).
All of these roles, though, depend on their colouration—which is unchanging. This plays into the idea that butterfly wings are dead tissue, like a bird's feathers or a mammal's hair. In fact, that is not true. For example, in some species males' wings harbour special cells that release chemicals which attract females.
Nanfang Yu, a physicist at Columbia University, in New York, has been looking into the matter. One of his interests is the optical(光学的)properties of biological materials. That has led him to study butterfly wings in more detail. And, in cooperation with Naomi Pierce, a butterfly specialist at Harvard University, he has now shown, in a paper published this week in Nature Communications, that butterfly wings are, indeed, very much alive.
Initially, Dr Yu and Dr Pierce wanted to know how the insects keep their body temperatures up without their wings overheating.
Unlike birds and mammals, butterflies do not produce enough internal heat to metabolize(新陈代谢). Instead, they rely on outside heat sources—usually the sun—to bring their bodies up to speed. But their wings, being thin protein membranes(膜), have a limited thermal capacity. Those wings can therefore overheat quickly if the insects are exposed to the sunlight too long, or, oppositely, can cool down too rapidly if they are flying through cold air.
In their experiments, the two researchers used a laser(激光)to heat up spots on the wings of dozens of butterfly species. When the temperature of the area under the laser reached 40℃ or so, the insects responded within seconds by doing things that stopped their wings heating up further. These actions included a butterfly turning around to minimize its exposure to the laser, beating its wings or simply walking away.
1.What's Dr Yu's discovery about butterfly wings?
A.They contain dead tissue.
B.They are too thin to store heat.
C.They have different functions.
D.They react quickly to high heat.
2.Which of the following is True according to the text?
A.Butterflies metabolize completely with its internal heat.
B.Chemicals from butterfly wings help drive away threats.
C.The color of butterfly's wings keeps fixed.
D.The researchers achieved big in optical properties.
3.How can a butterfly stop its wings overheating?
A.By providing heat itself.
B.By flying through cold air.
C.By removing the source of heat.
D.By adjusting their heating surface.
4.What's the best title for the text?
A.A Research into Butterfly Wings
B.The Jobs of Butterfly Wings
C.Butterfly Wings: Dead or Alive
D.Butterfly Wings Temperature Changes
高三英语阅读理解中等难度题查看答案及解析
When they retire, many people over 60 prefer the houses in the country to spend their remaining years to __________ in a large city.
A. it B. that C. those D.which
高三英语单项填空中等难度题查看答案及解析
Although he has become wealthy, Mr. Wood remains _______ he used to be, modest and friendly.
A. that B. how C. who D. what
高三英语单项填空中等难度题查看答案及解析
Although he has become wealthy, Mr. Wood remains ________ he used to be, modest and friendly.
A.when B.where
C.how D.what
高三英语单项填空中等难度题查看答案及解析
It ______ to be seen who will be the victor in the contest.
A. stayed B. remained C. kept D. left
高三英语单项填空中等难度题查看答案及解析
It remains ________whether Jim’ll be fit enough to play in the finals.
A.seen | B.to be seen | C.seeing | D.to see |
高三英语单项填空中等难度题查看答案及解析
It remains________ whether Jim’ll be fit enough to play in the finals.
A.seen B.to be seen
C.seeing D.to see
高三英语单项填空中等难度题查看答案及解析