13. When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks。

　　A. venture    B. mission    C. commission    D. responsibility

　　[答案]B. mission。

　　[注释]mission通常指一种特殊的、特定的且有一定难度的使命或工作，常与accomplish, complete等词搭配，如：accomplish a historic mission完成一项历史使命。Venture冒险；常指商业上的冒险投机。例如：He declined the business venture. Commission委任；代理；佣金。He often goes beyond his commission。(他时常越权。)responsibility责任。本题译文：当航天飞机完成了它的使命，它能在大约两周内做好准备再次航行。

　　14. He's the kind of man who is fond of _____ compliments to other men's wives。

　　A. paying    B. saying    C. expressing    D. showing

　　[答案]A. paying[注释]pay a compliment (compliments) to sb。恭维某人。

　　15. Radar enables the pilot of an airliner to take off, fly and land in _____。

　　A. danger    B. comfort   C. continuity    D. safety

　　[答案]D. safety.[注释]in safety安全地。从逻辑上看，其他选择均不切题。

　　16. The map was drawn to the standard _____ of 1/100,000, so there was not much detail。

　　A. route    B. line    C. rate    D. scale

　　[答案]d. scale。

　　[注释]scale在此题中意指“(实物与地图、图解等代表物间的)比例，比例尺”.be drawn to be standard scale of 1/100,000(按照十万分之一标准比例尺绘制)。

　　17. Our Party has always devoted great attention to raising the living _____ of the working people。

　　A. cost    B. situation    C. level    D. standard

　　[答案]D. standard.[注释]living standard生活水准。

　　18. It was _____ by the railway board that the cost of rail fares would be increased by ten percent。

　　A. noticed    B. stated    C. suggested    D. noted

　　[答案]B. stated。

　　[注释]state此处意为“(=make sth. know, announce)宣布，通告，声明(口头的或书面的)”，如：It is stated that all the accident were killed。(据宣布，事故中全部人员无一幸免。)suggest建议，是表示欲望意义的动词，从句中要用虚拟语气(should +动词原形)。Note(=notice)“注意到”，如：It was noted that the temperature rose during this time。

　　19. The chances of discovering life on Neptune are about a million _____。

　　A. at one    B. for one    C. to one    D. against one

　　[答案]c. to one.[注释]a million to one百万分之一，意为“几乎没有什么可能”。

　　20. Everything he said then was _____ by what happened later。

　　A. identified    B. signified    C. noticed    D. verified

　　[答案]D. verified。

　　[注释]verify(=prove the truth of)证实，证明：1)It was easy to verify his statements。(很容易证实他说的话。) 2)Later findings verified the scientist's theory(后来的各种发现证明这位科学家的理论是对的。)identify识别，鉴别；signify表示，意味，要紧；有重要性：1)He signified that he agreed by nodding。(他点头表示同意。) 2)Never mind, it doesn't signify。(没事儿，这无关紧要。)

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