更多"[不定项选择题]The working parent is not w"的相关试题:
[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)
______(49)
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.
[不定项选择题]不定项8、大气预测模型AERMOD和CALPUFP均需输入的参数有()。
A.土地利用类型
B.污染源参数
C.高空气象数据
D.地形参数
[不定项选择题]共用题干
A焦化厂为民营企业，从业人员1000人，2009年发生生产安全事故2起、造成2人轻伤。该厂因精苯工业废水兑水稀释后外排，被环保部门责令整改。该厂采取的整改措施是将废水向煤堆喷洒，这样既抑制了扬尘，又避免了废水外排。为防止相关事故发生，该厂于2009年5月20日制定实施了《A焦化厂精苯污水喷洒防尘管理办法》。2011年5月11日15时20分许，A厂备煤工甲、乙在进行胶带输送机巡检作业时闻到强烈异味，随后两人分别前往不同部位查找原因。15时38分，乙听到从甲的方向传来一声闷响，气浪迎面扑来，发现通廊部分坍塌。乙立即呼救。厂领导接到报告后，迅速组织对胶带输送机通廊坍塌现场进行搜救，在胶带输送机通廊北端发现甲倒在废墟中。甲头部有明显外伤，身上大面积烧伤，经医务人员确认已经死亡。事故调查确认，此次事故为1号煤仓内苯蒸气爆炸事故。在含苯废水向煤场内煤堆喷洒1年后，废水管道断裂，废水从管道断裂处流入煤堆底部，经胶带输送机运输，大量含苯煤粉进入1号煤仓，从含苯煤粉中挥发出的低浓度苯蒸气积累、聚集达到爆炸极限，遇到点火源后引起爆炸。
根据以上场景，回答下列问题（共14分，每题2分，1～3题为单选题，4～7题为多选题）：
根据《安全生产事故报告和调查处理条例》（中华人民共和国国务院令第493号），关于该起事故的调查，下列说法中正确的是()
A.由A厂所在地县级人民政府国资委组织调查
B.由A厂所在地县级人民政府安全生产监督管理部门组织调查
C.由A厂所在地县级环境部门组织调查
D.可邀请相关专家作为调查组成员参与事故调查
E.A厂上级主管部门、工会参与事故调查
