题目内容
It is a truth universally ______ that a single and rich man must be in want of a wife.
| A．achnowledging | B．achnowledged |
| C．be achnowledged | D．to achnowledge |
B
解析试题分析：考察分词做定语。本句中的it是形式主语，真正的主语是后面的that引导的主语从句that a single and rich man must be in want of a wife.名词truth与动词achnowledge之间构成被动关系，故使用过去分词表示被动。C项中的be是多余的。句意：这是一个被广泛承认的事实，一个富有的单身男人一定需要一个妻子。故B正确。
考点：考察分词做定语
点评：当分词做定语的时候，如果构成分词的动词与名词构成主动关系，就使用现在分词做定语；当二者构成被动关系，使用过去分词做定语。单独的一个分词做定语要放在名词的前面，分词短语做定语要放在分词的后面。
特高级教师点拨系列答案
F. “This is the hottest planet we know about. ” says Dr. Dimitar Sasselov, a scientist who led the discovery team. “It is hot enough to have an iron fog and to rain hot iron droplets (细沫) . ”
. “This is the hottest planet we know about,” says Dr. Dimitar Sasselov, a scientist who led the discovery team. “It is hot enough to have an iron fog and to rain hot iron droplets (细沫).”
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F．“This is the hottest planet we know about,”says Dr Dimitar Sasselov,a scientist who led the discovery team．“It is hot enough to have an iron fog and to rain hot iron droplets（细沫）．”