Bears primarily are______creatures, and they will typically ignore humans unless they are frightened or threatened.

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问题 Bears primarily are______creatures, and they will typically ignore humans unless they are frightened or threatened.

选项 A、selfish
B、simple
C、solitary
D、serene

答案C

解析    (1)句子结构。
   本句是由and连接的并列句。前一句的结构为Bears(主语)primarily are(系动词)creatures(主语补语),and(并列连词)they(主语)will typically ignore(谓语)humans(宾语)unless they are frightened or threatened(条件状语从句)。
   (2)选项词义。
   A.selfish adj.(人、行为、动机)不顾别人的;自私的
   B.simple adj.简明的,简易的,简单的;朴素的,简朴的;结构单一的
   C.solitary adj.(鸟、哺乳动物、昆虫)独居的
   D.serene adj.安详的,宁静的;安宁的,平静的
   本句的大意为“熊主要是一种独居动物,通常不会理睬人类,除非受到惊吓或威胁”。从上下文来看,这里是说明熊的生活习性,从四个词来看,只有C表示习性,而A表示品行,B表示性质,D表示状态。因此只有solitary最符合题意。
   【知识拓展】词汇拓展:solitary与lonely。
   ①solitary adj. done or existing alone;(of a bird,mammal,or insect) living alone or in pairs,especially in contrast to related social forms
   e.g.Tigers are essentially solitary.
   老虎本质上是独居动物。
   ②lonely adj. lacking companions or companionship
   e.g.More importantly, you can regain your self-esteem which you may have lost during one of those frustrating,lonely nights.
   更重要的是,你可以重新找回在某个沮丧、寂寞的夜晚失去的自尊。
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