单项选择题

A．broad
B．inclusive
C．tentative
D．extensive
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问答题
在这些原因中，有些完全是自然而然地来自社会需求，另一些则是由于科学在一定程度上自我加速而产生某些特定发展的必然结果。[精解] Some of these causes are completely reasonable results of social needs．Others are reasonable consequences of particular advances in science being to some extent self-accelerating.句子分析：一、句子可以拆分为三段：Some of these causes are completely reasonable results of social needs．／Others are reasonable consequences of particular advances in science／being to some ex- tent self-accelerating．二、句子的结构：1)主干结构是对比句Some．．．are．．．reasonable results of．．．Others are reasonable consequences of．．．2)particular advances 后面有多重定语in science being to some extent self-accelerating。三、词的处理：are．．．results of 是……的结果，来自于；social needs 社会需求；to some extent 在一定程度上；self-accelerating 自我加速；
单项选择题
A．attainB．shedC．retrieveD．seek
A．attain
B．shed
C．retrieve
D．seek
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