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问题 选择题

当“遥感五号卫星”被成功送入太空时，地理老师要求同学们绘制出此时“地球公转位置图”和“光照图”，老师选择了四幅图进行展示，其中正确的一幅是（　　）

A．

B．

C．

D．

答案

北京时间2008年12月15日11时22分，位于秋分日（9月23日前后）与冬至日（12月22日前后）之间，并且接近冬至日，结合地球公转示意图可知，AB都不符合题意；地球自转的方向是自西向东，从北极上空看，按逆时针方向转动，从南极上空看，按顺时针方向转动，可知，C选项表示北半球，D选项表示南半球；冬至日时，太阳直射南回归线，此时，北极圈内有极夜现象．

故选项C符合题意，选项D不符合题意．

故选：C．

单项选择题 A1/A2型题

多数大腿截肢者在行走时，都不使用截肢侧的髋关节外展肌。主要原因是（）

A.残肢短

B.残端疼痛

C.髋关节外展挛缩

D.接受腔外侧壁适配不良

E.截肢者没有接受过正规的步态训练
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单项选择题 案例分析题

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2处填上正确答案（）

A.valuable

B.appropriate

C.convenient

D.favorite
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