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电视音响系统的布置包括室内（）与扬声器的布置；室内闭路电视和各种信息播放系统的布置方式的确立。
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当主、副回路等效为单回路系统后，整定时先整定（），后整定（）。
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腰椎间盘突出症早期提高腰背肌张力的练习方法有（）
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角色冲突的原因主要有（）。
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名片的放臵应注意什么？
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培养幼儿思维独立性的措施包括()。
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统计从业资格认定作为行政行为之一，在性质上属于（）。
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From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When humans first 1 , they were like newborn children, unable to use this 2 tool. Yet once language developed, the possibilities for human kind’s future 3 and cultural growth increased. Many linguists believe that evolution is 4 for our ability to produce and use language. They 5 that our highly evolved brain provides us 6 an innate language ability not found in lower 7 . Proponents of this innateness theory say that our 8 for language is inborn, but that language itself develops gradually, 9 a function of the growth of the brain during childhood. Therefore there are critical 10 times for language development. Current 11 of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. 12 , more and more schools are discovering that foreign languages are best taught in 13 grades. Young children often can learn several languages by being 14 to them, while adults have a much harder time learning another language once the 15 of their first language have become firmly fixed. 16 some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been 17 from other human beings do not possess language. This demonstrates that 18 with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language 19 than any innate capacities. These theorists view language as imitative, learned behavior. 20 , children learn language from their parents by imitating them. Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones. 请在5处填上正确答案（）
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一般来说，降低人群易感性最主要干预措施是（）
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土壤胶体分为（）、（）和（）。