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Easter(复活节) is still a great day for worship, randy in baskets and running around the yard finding eggs, but every year it gets quite a bit worse for bunnies. And no, not because the kids like to pull their ears. The culprit is climate change, and some researchers found that rising temperatures arc having harmful effects on at least five species of rabbit in the US. Take the Lower Keys March rabbit, for instance. An endangered species that lives in the Lower Florida Keys, this species of cottontail is a great swimmer — it lives on the islands! — but it is already severely affected by development and now by rising levels. According to the Center for Biological Diversity, an ocean level rise of only 0. 6 meters will send these guys jumping to higher ground and a 0.9-meter rise would wipe out their habitat (栖息地) completely. The snowshoe hare, on the other hand, has a color issue. Most of these rabbits change their fur color from white in the wintertime to brown in the summer, each designed to give them better cover from predators(捕食者).  As the number of days with snow decreases all across the country, however, more and more bunnies arc being left in white fur during brown dirt days of both fall and spring, making them an easier mark for predators. Researchers know that the color change is controlled by the number of hours of sunlight, but whether the rabbit will be able to adapt quick enough to survive is a big question. The National Wildlife Federation has reported that hunters have noticed their numbers are already markedly down. American pikas or rock rabbits, a relative of rabbits and hares, might be the firs' of these species to go extinct due to climate change. About 7-8 inches long, pikas live high in the cool, damp mountains west of the Rocky Mountains. As global temperatures rise, they would naturally migrate (迁徙) to higher ground — but they already occupy the mountaintops. They can't go any higher. The National Wildlife Federation reports that they might not be able to stand the new temperatures as their habitat beats up. The volcano rabbit has the same problem. These rabbits live on the slopes of volcanoes in Mexico, and recent studies have shown that the lower range of their habitat has already shifted upward about 700 meters, but there are not suitable plants for them to move higher, so they are stuck in the middle. Scientists are concerned about their populations. Native to the US, pygmy rabbits weigh less than 1 pound and live in the American West. They are believed to be the smallest rabbits in the world. Their habitats have been destroyed by development. Several populations, such as the Columbia Basin pygmy, almost went extinct and were saved by zoo breeding programs. Pygmy rabbits also rely on winter cover by digging tunnels through the snow to escape predators, but lesser snowfall is leaving them exposed. All of this gives new meaning to dressing up in a giant bunny costume this Easter. 小题1:The writer mentions Easter at the beginning of the passage in order to_______. A.show the importance of Easter Day B.introduce the issue about bunnies C.remind people of Easter traditions D.discuss the relationship between Easter and bunnies 小题2:The word 'culprit' ( Paragraph 2) is closest in meaning to______. A.criminal B.judge C.victim D.producer 小题3:According to the passage, some rabbits can now be easily Uncovered by predators because they_______ A.are exposed lo more skillful hunters B.have moved to habitats with fewer plants C.haven't adapted themselves to climate change D.can't change their fur color into white in the fall and the spring 小题4:The problem faced by volcano rabbets and rock rabbits is that________. A.both are affected by 1ess snow B.both are affected by rising sea levels C.neither can find enough food D.neither can migrate to higher places 小题5:Which best describes the writer's tone in the postage? A.Approving. B.Concerned. C.Enthusiastic. D.Doubtful.
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【判断题】凯利公式是一个用以使特定赌局中,拥有正期望值之重复行为长期增长率最大化的公式。
A.
正确
B.
错误
【多选题】公民甲娶妻乙,育有一子一女,女儿丙已出嫁,儿子娶妻丁,生有一子戊,儿子于5年前不幸遇车祸死亡。甲乙均年老,无固定生活来源,女儿出嫁后,拒不赡养老人,并曾数度虐待甲乙,甲乙主要依靠儿媳丁供养。甲于2000年3月死亡,留下房屋4间。按照继承法规定,下列哪些人可以参加第一顺序继承?
A.
B.
C.
D.
【单选题】若元素a、b、c、d、e、f依次进栈,允许进栈、出栈操作交替进行,但不允许连续三次进行退栈操作,则不可能得到的出栈顺序是( )。
A.
d c e b f a
B.
c b d a e f
C.
b c a e f d
D.
a f e d c b
【单选题】公民甲娶妻乙,育有一子一女,女儿丙已出嫁,儿子娶妻丁,育有一子戊,儿子五年前遇车祸死亡。甲、乙均年老,无生活来源,女儿出嫁后拒不赡养老人,并数度打骂甲、乙,情节严重,甲、乙主要靠儿媳丁扶养。甲于2009年死亡,留下房屋一套,按照继承法规定,下列不能作为第一顺序继承人的是( )。
A.
B.
C.
D.
【单选题】半流质饮食适用于
A.
老、幼患者
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消化不良患者
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病情危重患者
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低热患者
【单选题】若元素a、b、c、d、e、f依次进栈,允许进栈、退栈操作交替进行,但不允许连续三次进行退栈工作,则不可能得到的出栈序列是?()
A.
b c a e f d
B.
c b d a e f
C.
d c e b f a
D.
a f e d c b
【单选题】若元素a,b,c,d,e,f依次进栈,允许进栈、退栈操作交替进行,但不允许连续三次进行退栈操作,则不可能得到的出栈序列是( )。 【2010年全国试题1(2)分】
A.
d,c,e,b,f,a
B.
c,b,d,a,e,f
C.
b,c,a,e,f,d
D.
a,f,e,d,c,b
【多选题】公民甲娶妻乙,育有一子一女,女儿丙已出嫁,儿子娶妻丁,生有一子戊,儿子于5年前不幸遇车祸死亡。甲乙均年老,元固定生活来源,女儿出嫁后,拒不赡养老人,并曾数度虐待甲乙,甲乙主要依靠儿媳丁供养。甲于2000年3月死亡,留下房屋4间。按照继承法规定,下列哪些人可以参加第一顺序继承?
A.
B.
C.
D.
【单选题】半流质饮食适用于
A.
老、幼患者
B.
病情危重患者
C.
消化不良患者
D.
病情较轻患者
E.
低热患者
【单选题】若元素a,b,c,d,e,f依次进栈,允许进栈、退栈操作交替进行。但不允许连续三次进行退栈工作,则不可能得到的出栈序列是( )
A.
dcebfa
B.
cbdaef
C.
dbcaef
D.
afedcb
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