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Play{{/B}} Play is the principal business of childhood, and in recent years research has shown the great importance of play in the development of a human being. From earliest infancy, every child needs opportunity and the right materials for play, and the main tools of play are toys. Their main function is to suggest, encourage and assist play. To succeed in this they must be good toys, which children will play with often, and will come back to again and again. Therefore it is important to choose suitable toys for different stages of a child’s development. In recent years research on infant development has shown that the standard a child is likely to reach, within the range of his inherited abilities, is largely determined in the first three years of his life. S A. he should be allowed to choose his own toys. B. he should be given identical toys. C. he should be given different toys. D. he should be given fewer and fewer toys. [填空题]一日票需经过（）发售才能在车站使用。
[单选题]()属于四类包裹。
A.电动自行车 B.自行车 C.残疾人车 D.摩托车 [判断题]中国证监会、财政部可以指定相关机构作为保障基金管理机构，代为管理保障基金。( )
A.正确 B.错误 [单项选择]关于旅客运输的影响因素，下列说法错误的是( )。
A. 一般来说，在其他条件相同时，如果航空运输服务价格上升，航空运输需求量减少；如果航空运输服务价格下降，航空运输需求量则会增长 B. 消费者收入与航空客运市场需求存在负相关关系 C. 社会经济发展水平越高，不同地区之间的经济与社会联系越广泛，人们对于航空运输的需求量也越大 D. 航空运输服务质量越高，越能吸引消费者产生购买航空运输服务的欲望 [单选题]在表面式换热器中，冷流体和热流体按相反方向平行流动，则称为（ ）。[1.0分]
A. 交流式 B. 对流式 C. 混合式 D. 顺流式 [单项选择]“人类基因组计划”对于人类深入了解自身的基因结构和功能有重要意义，其目的是测定人类基因组的（）
A. mRNA的碱基序列 B. DNA的碱基序列 C. tRNA的碱基序列 D. rRNA的碱基序列 [判断题]现场倒闸操作应执行唱票、复诵制度，宜全过程录音。
A.正确 B.错误 [填空题]（）的奈·阿尔芒都的“新古典主义风格”引起国际电影界的密切注意。
我来回答: 提交
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