1、concentrate v.全神贯注，精神集中，专心致志；集中，集合；浓缩
We should concentrate all our efforts on improving education.我们应该集中精力努力改进教育工作。
Troops are concentrating south of the river.军队正向河的`南边集结。
n.浓缩液
「用法」concentrate（sth.）on sth.／doing sth.
「全真考题」Anne couldnt concentrate what she was doing while her family were watching TV.（93.1）
「答案」B
2、continual adj.继续不断的；一再重复的
continual rain 不停的雨
「辨析」continual与continuous
continual一般指多次重复的动作：Please stop your continual questions.
continuous表示动作或物体继续不停地或不间断地进行下去：a continuous flow of traffic
「全真考题」Our journey was slow because the train stopped at different villages.（99.1）
asingly ually
inuously inually
「答案」D
contrary adj.（在性质、倾向或方向等方面）相反的；好与人作对的
contrary beliefs 截然相反的信仰
书香门第
