考点1单项填空（语法和词汇知识）
（一） 名词和主谓一致
1. （2010唐山高一检测）The number of people invited ________ fifty, but a number of them ________ absent for different reasons.
A. were; was B. was; was C. was; were D. were; were
2. （2010唐山高一检测）You should read the ______ before taking the medicine.
A. lines B. words C. instructions D. suggestions
