Question

It is obvious to the students ______ they should get well prepared for their future.

A．as

B．which

C．whether

D．that

Answer 1

D

解析试题分析：考查名词性从句用法。本题中的it是形式主语，真正的主语是后面的that they should get well prepared for their future. that在句中不充当任何成分，只起引导作为。故D正确。
考点：考查名词性从句
点评：名词性从句的考查集中在引导词的选择上，连接词that, whether, if在句中不充当任何成分，只起连接作用；连接代词who(ever), which(ever), whom(ever),whose(ever),what(ever)在句中做主语，宾语，表语和定语；连接副词when, why, where, how，在句中做状语。应从上下句的句法关系着手分析，切不可‘望句形生答案’总的来说，考生在解答此类型时，可用排除法或造句法，造句法就是仿造原句的语法功能仿造出一个易懂易理解的句子，帮助判断。