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Dolphins, though usually friendly, can become offensive when threatened.A、violen
Dolphins, though usually friendly, can become offensive when threatened.A、violen
游客
2023-12-31
23
管理
问题
Dolphins, though usually friendly, can become
offensive
when threatened.
选项
A、violent
B、aggressive
C、fearless
D、noisy
答案
B
解析
(1)句子结构。
本题句子的两个从句均有省略,如括号画线部分所示:Dolphins,though(
they are
)usually friendly,can become offensive when(
they are
)threatened。在when引导的时间状语从句和though引导的让步状语从句中,从句主语与主句的主语相同,谓语为be构成的系表结构时,从句中的主语和be都可以省略。
(2)选项词义。
A.violent adj.暴力的;猛烈的
B.aggressive adj.侵略性的;好斗的,挑衅的
C.fearless adj.无畏的;大胆的
D.noisy adj.喧闹的;嘈杂的
句子大意为“通常情况下,海豚和善友好,但受到威胁时会变得具有攻击性”。原题中的offensive意为“攻击的”,与选项中的aggressive词义最为接近,因此选项B正确。
【知识拓展】语法拓展:状语从句中的主、谓语省略。
状语从句的主语是it或与主句的主语相同时,常省略从句的主语和助词。常见的状语从句有when,while,whenever和before等引导的时间状语从句;由if或unless引导的条件状语从句;由though,although,even if或even though引导的让步状语从句;由as,as if,as though引导的方式状语从句;由whenever引导的地点状语。
e.g.
When first introduced to the market
,these products enjoyed great success.
这些产品首次上市就很畅销。
Though lacking money
, his parents managed to send him to university.
尽管他的父母手头紧,但还是坚持让他读大学。
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