The story shows that ________ knowledge of ________ first aid can make ________ real difference.
The story shows that ________ knowledge of ________ first aid can make ________ real difference.
a; /; a 考查冠词的用法及固定搭配。句意:这个故事表明有了急救知识确实能起很大的作用。Knowledge是不可数名词,一般前面不能加不定冠词,但a knowledge of sth.“掌握某方面的知识”,前面需加a;first aid前面不用加冠词;make a difference “有影响,有关系”,是固定短语。