答案　D

解析　考查形容词辨析。句意为：教师要求孩子们遇到不懂的问题就大胆提问。be/feel confident about对......有信心；be certain about＝be sure about确信；be concerned about关心，挂念。

11．-Sir，may I have three days off next week?

-________.You have two meetings to attend.

A．It depends B．Of course

C．Forget it D．That's for sure

答案　C

解析　句意为：--先生，下周我可以请三天假吗？--不行，你有两个会议要参加。Forget it不行，表示拒绝，符合句意。It depends视情况而定；Of course当然；That's for sure那当然，那是肯定的。

12．This company was________ of using misleading advertisements in its promotion of the weight­ loss pills.

A．charged B．accused

C．blamed D．approved

答案　B

解析　句意为：这家公司被指控使用误导性广告宣传减肥药。accuse sb.of sth.控告某人某事，符合句意。charge sb.with sth.控告某人某事；blame sb.for sth.把某事归咎于某人；approve of赞成。故选B。

13．The engine of the ship was out of order and the bad weather ________ the helplessness for the crew at sea.

A．added to B．added up

C．made up D．turned up

答案　A

解析　句意为：船的发动机出了故障，而且恶劣的天气增添了大海中船员们的无助。add to增添，增加，符合句意。故选A。

14．Assistance dogs are trained to help________ disabled to live ________more independent life.

A．/；a B．a；the

C．the；the D．the；a

答案　D

解析　"the＋形容词"表示一类人，the disabled残疾人；live a．..life过......生活。所以选择D。

15．The dictionary my father bought me is________ to me in my English study.