These figures lead to an expectation in which the main application area would be in the office environment.

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问题 These figures lead to an expectation in which the main application area would be in the office environment.

选项 A、if
B、that
C、as
D、whether

答案B

解析    (1)画线部分错误分析。
   本题的考点为同位语从句与定语从句的区别。原句从结构来看in which本用于引导定语从句,句中先行词是expectation,in which指的是in the expectation,但从句的内容实际是对expectation内容的解释说明,该从句句子结构完整,不缺成分,因而此处应为同位语从句,用以补充说明expectation的内容,故应选用关系词that。
   (2)选项分析。
   本题中,由于从句的句子结构完整,所以从句应为补充说明expectation的同位语从句,用连词that引导。连词if不可引导同位语从句,排除选项A;“whether+陈述句,,可构成同位语从句,根据句意,从句为陈述句而非一般疑问句,因此排除选项D;而as作为连词多引导状语从句,只有选项B符合句意与语法形式要求。
   【知识拓展】语法拓展:同位语从句。
   同位语从句位于名词之后,用来补充说明名词。用法如下:
   ①由连词that引导同位语从句。同位语从句所说明的词常为表示抽象概念的名词,如fact,idea,question,conclusion,news,conclusion,doubt,theory,thought,evidence,order,proof, confidence等。
   e. g. He was prepared to prove his theory that two different weights would fall to the ground at the same time.
   他准备证明他的理论:两个重量不同的物体同时落地。
   ②whether也引导同位语从句,但注意if不可引导同位语从句。
   e.g.There is some doubt whether he will come.
   他是否会来还不一定。
   ③连接代词what,who,whom,whose可以引导同位语从句。
   e.g.Then arose the question who(whom)we should trust in.
   那时就产生了我们应该相信谁的问题。
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