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问题 单项选择题

肾综合征出血热发病的季节性

A．主要在7、8、9三个月发病

B．家鼠传播者主要在5～7月发病

C．黑线姬鼠传播者以11月至次年1月为高峰

D．林区姬鼠传播者主要在冬季

E．一般5～10年有一次全国大流行

答案

参考答案：C

解析：[解题思路] 本题考察对本病季节性的了解。虽然本病四季均可发病，但有明显的季节性，而且不同鼠类传播者的发病季节有一定的特征。其中黑线姬鼠传播者以11月至次年1月为高峰，5～7月为小高峰；家鼠传播者3～5月为高峰；林区姬鼠传播者主要在夏季。本病一般相隔数年有一次较大的流行，但不会引起全国大流行。因此本题答案为C。

单项选择题

链表不具有的特点是( )。

A．不必事先估计存储空间

B．可随机访问任一元素

C．插入删除不需要移动元素

D．所需空间与线性表长度成正比
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单项选择题

Starting with his review of Skinner’s Verbal Behavior, Noam Chomsky had led the psycholinguists who argue that man has developed an innate (天生的) capacity for dealing with the linguistic universals common to all languages. Experience and learning then provide only information about the (1) instances of those universal aspects of language which are needed to communicate with other people within a particular language (2) .

This linguistic approach (3) the view that language is built upon learned associations between words. What is learned is not strings of words per se (本身), but (4) rules that enable a speaker to (5) an infinite variety of novel sentences. (6) single words are learned as concepts: they do not stand in a one-to-one (7) with the particular thing signified, but (8) all members of a general class.

This view of the innate aspect of language learning is at first not readily (9) into existing psychological frameworks and (10) a challenge that has stimulated much thought and new research directions. Chomsky argues that a precondition for language development is the existence of certain principles "intrinsic (原有的) to the mind" that provide invariant structures (11) perceiving, learning and thinking. Language (12) all of these processes; thus its study (13) our theories of knowledge in general.

Basic to this model of language is the notion that a child’s learning of language is a kind of theory (14) . It’s thought to be accomplished (15) explicit instruction, (16) of intelligence level, at an early age when he is not capable of other complex (17) or motor achievements, and with relatively little reliable data to go on. (18) , the child constructs a theory of an ideal language which has broad (19) power. Chomsky argues that all children could not develop the same basic theory (20) it not for the innate existence of properties of mental organization which limit the possible properties of languages.

6（）

A.Yet

B.Even

C.Still

D.Likewise
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