Question

There was no sign _______ they had died from diseases such as bird flu - the main worry in such cases. Among the theories was _______ a truck had collided（碰撞）with the crowd.  

1. A.
   /; that
2. B.
   that; that
3. C.
   that; which
4. D.
   that; /

Answer 1

B
试题分析：考察名词性从句。本题第一空使用that引导同位语从句that they had died from diseases such as bird flu解释前面的名词sign的内容。第二空that引导的是一个主语从句that a truck had collided（碰撞）with the crowd, that在句中不充当任何成分，只起引导和连接的作用。句意：没有他们死于禽流感的迹象，禽流感是这个地区的最主要担心的死亡的原因。在这些原因里，一辆卡车撞上了人群。故B正确。
考点：考察名词性从句
点评：名词性从句要使用陈述语序。同时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，考生在解答此类题型时，可用排除法，造句法或者还原法，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。