outcome.

A. enthusiastic B. optimistic

C. concerned D. controversial

答案与解析：C　考查形容词辨析。句意：他们对这种生意非常熟悉，没必要担心结果会怎样。enthusiastic热情的；optimistic乐观的；controversial有争议的；be concerned about担心的，忧虑的。

5．Please tell me how the accident________， I am still in the dark.

A．came by B．came upon

C．came to D．came about

答案与解析：D　句意：请告诉我事故是怎样发生的，我现在仍然不知道。come by (从......旁)经过，得到；come upon突然产生， 偶然遇到， 降临；come to共计，涉及， 苏醒过来， 被继承， 达成；come about发生。

6．I've never seen anyone run so fast-________David go.

A．just watch B．just to watch

C．just watching D．just having watched

答案与解析：A　本题考查动词的用法。根据句子的意思和语境分析，此处应该是祈使句型，所以使用动词原形。

7．Most people can't________the day without at least one cup of tea or coffee.

A．get at B．get on

C．get by D．get through

答案与解析：D　理解与get相关的短语：get at够得着； 理解； 意指，暗示。get on进展； 出人头地； 登(车), 上(马)。get by过活； 过得去； 经过， 通过。get through通过； 穿过； (工作)完成； (测验)合格； 接通电话。根据句意可判断答案是D项。

8．To everyone's joy, the famous film star was________mayor of the city.

A．adopted B．appointed

C．named after D．in the name of

答案与解析：B　根据句意可判断答案是B项： appoint sb.(to be)＋职务或appoint sb. as＋职务，任命某人为......，to be 可以省略；注意职务前不加任何冠词。

9．His remarks________me in my opinion that he was a very considerate boy.

A．concerned B．contacted

C．confirmed D．considered

答案与解析：C　句意：他的言论使我更坚定了我的观点：他是个非常体贴别人的孩子。根据句意可知答案是C项：confirm sb. in...： 使某人更坚定(信念等)。

10．It's bad manners to________others when they are speaking.

A．interrupt B．cut in

C．interview D．break into

答案与解析：A　句意：当别人正在说话时，打断他们说话是不礼貌的。interrupt打断(讲话或讲话人); cut in插话； break into闯入，打断；突然......起来。根据句意可知答案是A项。

11．Don't disturb your sister, she is________a fairy tale.

A．absorbing in B．absorbed in

C．absorbing with D．absorbed with

答案与解析：B　理解句意可知答案是B项：be absorbed in...专心致力于......。

12．Teaching is not just a simple piece of work; it's an art________a science.

A．is based on B．based with