Many linguists believe that evolution is【C4】______ for our ability to produce and use language. They 【C5】______ that our highly evolved brain provides us【C6】______ innate language ability not found in lower 【C7】______ . Proponents of this innateness theory say that our【C8】______ for language is inborn, but that language itself develops gradually,【C9】______ a function of the growth of the brain during childhood. Therefore there are critical【C10】______ times for language development.
Current【C11】______ of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable.【C12】______ , more and more schools are discovering that foreign languages are best taught in【C13】______ grades. Young children often can learn several languages by being【C14】 ______ to them, while adults have a much harder time learning another language once the【C15】______ of their first language have become firmly fixed.
【C16】______ some aspects of language are undeniably innate, language does not develop automatically in a vacuum. Children who have been【C17】______ from other human beings do not possess language. This demonstrates that【C18】______ with other human beings is necessary for proper language development. Some linguists believe that this is even more basic to human language【C19】______ than any innate capacities. These theorists view language as imitative, learned behavior.【C20】______ , 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.
【C1】
A.generated
B.evolved
C.born
D.originated
第1题
(7) IEEE 802.11无线局域网的介质访问控制方法中,帧间间隔大小取决于()。
A)接入点
B)交换机
C)帧大小
D)帧类型
第2题
IEEE 802.11无线局域网的介质访问控制方法中,帧间间隔大小取决于()。
A.接入点
B.交换机
C.帧大小
D.帧类型
第3题
IEEE 802.11无线局域网的介质访问控制方法中,帧问间隔大小取决于()。
A)接入点
B)交换机
C)帧大小
D)帧类型
第4题
(8 ) IEEE 802.11 无线局域网的介质访问控制方法中,帧间间隔大小取决于
A )接入点
B )交换机
C )帧大小
D )帧类型
第5题
IEEE8022.11无线局域网的介质访问控制方法中,帧间间隔大小取决于______。
A.接入点
B.交换机
C.帧大小
D.帧类型
第6题
IEEE802.11无线局域网的介质访问控制方法中,帧问间隔大小取决于()。
A.接入点
B.交换机
C.帧大小
D.帧类型
第9题
A.IEEE 802.11标准定义了无线局域网的物理层与MAC层协议
B.IEEE 802.11标准定义了两类设备,即无线结点与无线接入点
C.无线接入点在无线与有线网络之间起到桥接的作用
D.IEEE 802.11标准在MAC层采用了CSMA/CD的访问控制方法
第10题
IEEE 802.11标准定义______访问控制子层与物理层的标准。
A.无线局域网
B.近距离无线个人局域网
C.宽带无线局域网
D.CSMA/CD总线介质访问
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