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【简答题】
Before marriage, younger Americans date each other, that is, they often go out together. Casual dating usually begins in the early teens, and in the late teens a _______ of steady dating develops. There is a great _________ that one goes to a dance with one person, to a football game with another, and to a picnic with a third. Sometimes two couples go out together. This is known as “ ______ dating”. Group dating is also ________ among young people. Large groups of boys and girls may _________ together. Young people may go out together for a long time, which is, ________, a public statement of their ________ to marry. Men and women go out together ___________ especially those in cities. Sometimes two couples go out together. This is known as “ ______ dating”. Group dating is also ________ among young people. Large groups of boys and girls may _________ together. Young people may go out together for a long time, which is, ________, a public statement of their ________ to marry. Men and women go out together ___________ especially those in cities.
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A.
纳税义务人
B.
税率
C.
税目
D.
征税对象
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A.
哺乳动物的成熟体细胞不具有全能性
B.
干细胞就是体外培养条件下容易实现全能性的细胞
C.
在生物体内,细胞并没有表现出全能性的原因是细胞核遗传物质改变
D.
植物的成熟体细胞比动物的成熟体细胞更容易实现全能性
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任脉
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督脉
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冲脉
D.
阴跷脉
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阳跷脉
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腰痛和放射性疼痛
B.
大便、咳嗽时加剧
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间歇性跛行
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休息时减轻
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骑自行车无妨
【简答题】英译汉:As is known to all, China is the largest developing country in the world.
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晨尿
B.
中段尿
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24h尿
D.
中午尿
E.
睡前尿
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纳税环节
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正确
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错误
【单选题】下列有关细胞的叙述合理的是 [     ]
A.
流感病原体、结核病病原体、人肿瘤细胞具有类似的细胞结构,都可以成为抗原
B.
效应T细胞合成抗体时有细胞核、核糖体、内质网、高尔基体等结构参与
C.
细胞全能性就是指一个细胞内所有基因同时得以表达
D.
细胞分裂存在于个体发育整个生命过程中,细胞分化在胚胎发育阶段达到最大
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