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【单选题】
当劳动者在其不能维持最低限度的生活水平时,根据有关法律规定,有权要求国家和社会按照法定的标准提供满足最低生活需求的资金和实物援助的一种社会保障是( )
A.
社会保险
B.
社会救助
C.
社会福利
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参考答案:
举一反三
【单选题】基因分离定律的实质是
A.
等位基因随同源染色体分开而分离
B.
子一代性状分离比例为3∶1
C.
子一代出现性状分离
D.
测交后代性状分离比为3∶1
【简答题】由椰壳纤维35%、纤维20%、羊毛纤维45%的未漂白机织物(幅宽超过30厘米)
【简答题】The most gifted students do not necessarily perform. best in exams. It counts for more to know how to make the most of one's abilities.
【简答题】简述我国人口老龄化的主要特点。
【简答题】The Academy numbers include the most gifted and skilled __ in the motion picture world.
【单选题】What do we mean by being 'talented' or 'gifted'? The most obvious way is to look at the work someone does and if they are capable of significant success, label them as talented. The purely quantitativ...
A.
Y
B.
N
C.
NG
【单选题】The main idea of the passage is______.
A.
that gifted children were most likely to become bright grown-ups
B.
that bright children were unlikely to be physically and mentally healthy
C.
how many gifted children turned successful when they grew up
D.
that when the bright children grew up, they would become ordinary
【多选题】2010年,我国老年人口将达到1.74亿,占总人口的12.8%。我国人口老龄化的主要特征有:()。
A.
未富先老
B.
老年人口数量多
C.
老龄化速度快
D.
高龄趋势明显
【单选题】分离定律的实质是
A.
子二代出现性状分离
B.
子二代性状分离比为3:1
C.
子二代性状分离比为1:1
D.
测交后代性状分离比1:1
E.
等位基因随同源染色体分离而分开
【单选题】基因分离定律的实质是 [     ]
A.
F 2 出现性状分离
B.
F 2 分离比3:1
C.
F 1 产生配子时等位基因分离
D.
F 1 产生的配子比例相同
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