【全真考题13】Although they plant trees in this area every year，the tops of some hills are still＿＿ ．
　　 （99．6）
　　 A）bare B）vacant C）blank D）hollow
　　 【全真考题14】Anne couldn't concentrate ＿＿ what she was doing while her family were watching TV．（93．1）
　　 A．to B．on C．for D．in
　　 【全真考题15】Our journey was slow because the train stopped ＿＿ at different villages．（99．1）
　　 A．unceasingly B．gradually C．continuously D．continually
　　 【全真考题16】What you have done is＿＿ the doctor's orders．（90．1）
　　 A．attached to B．responsible to C．resistant to D．contrary to

　　 【全真考题13】［答案］A 解析：bare a．无遮盖的；空的；仅仅的a bare hillside 光秃秃的（无树木的）山坡 ； v．揭露，暴露，揭开，去除……的覆盖物
　　 bare one's head 脱去帽子
　　 【全真考题14】【答案】B 解析：concentrate v．全神贯注，精神集中，专心致志；集中，集合；浓缩【用法】concentrate（sth．）on sth．／doing sth．
　　 continual adj．继续不断的；一再重复的
　　 continual rain 不停的雨
　　 【全真考题15】【答案】D【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16】【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 n．反面
　　 【用法】contrary to 违反：be contrary to the law；on the contrary 与此相反：It doesn't seem ugly to me；on the contrary，I think it's rather beautiful．