口服碘过敏试验的阳性反应为( )-我要搜题网

[单项选择]大战略的“活的灵魂”指的是它（）
A. 思维方式和艺术本性
B. 不同手段之间的平衡
C. 手段
D. 目的

[不定项选择题]共用题干 Single-parent Kids Do Best
Single mums are better at raising their kids than two parents-at least in the bird world.Mother zebra finches have to work harder and raise fewer chicks on their own,but they also produce more attractive sons who are more likely to get a mate.
The finding shows that family conflict is as important an evolutionary driving force as ecological factors such as hunting and food supply.______(46)
In evolutionary terms,the best strategy for any parent in the animal world is to find someone else to care for their offspring,so they can concentrate on breeding again.So it's normal for parents to try to pass the buck to each other.But Ian Hartley from the University of Lancaster and his team, wondered how families solve this conflict,and how the conflict itself affects the offspring.______(47)They compared single females with pairs,by monitoring the amount of food each parent collected,and removing or adding chicks so that each pair of birds was raising four chicks,and each single mum had two-supposedly the same amount of work.
But single mums,they found,put in about 25 percent more effort than females rearing with their mate.______(48)"The offspring suffer some of the cost of this conflict,"says Hartley?
The cost does not show in any obvious decrease in size or weight,but in how attractive they are to the opposite sex.When the chicks were mature,the researchers tested the"fitness"of the male offspring by offering females their choice of partner.______(49)
Sexual conflict has long been thought to affect the quality of care given to offspring,says zoologist Rebecca Kilner at Cambridge University,who works on conflict of parents in bi记S."But the experimental evidence is not great.The breakthrough here is showing it empirically".
More surprising,says Kilner,is Hartley's statement that conflict may be a strong influence on the evolution of behaviour,clutch size and even appearance."People have not really made that link,"says Har-tley.A female's reproductive strategy is usually thought to be affected by hunting and food supply. ______(50) ______(48)
A.To avoid being exploited,mothers with a partner hold back from working too hard if the father is being lazy,and it's the chicks that pay the price.
B.To find out, they measured how much effort zebra finch parents put into raising their babies.
C.Those males reared by single mums were chosen more often than those from two-parent families.
D.With two parents around,there's always a conflict of interests, which can have a detrimental effect on the quality of the offspring.
E.Kilner says conflict of parents should now be taken into account as well.
F.It turned out that single mums had greater influence on their offspring.

[单项选择]口服碘过敏试验的阳性反应为( )A. 局部红、肿、硬块直径大于1cmB. 口麻、头晕、心慌、呕吐、荨麻疹C. 血压、脉搏、呼吸、面色等改变D. 局部黏膜充血、水肿E. 出现全身水肿现象

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[单项选择]口服碘过敏试验的阳性反应为( )
A. 局部红、肿、硬块直径大于1cm
B. 口麻、头晕、心慌、呕吐、荨麻疹
C. 血压、脉搏、呼吸、面色等改变
D. 局部黏膜充血、水肿
E. 出现全身水肿现象