52.[详解]参阅III,42。本题译文, 他们已开过几次会议来起草明年得生产计划。

51. C. mess.[详解]make mess弄得乱七八糟。Make a mess of“把......弄得乱七八糟”：He made a mess of his work. (他把他的工作搞得乱七八糟。

50. B. charges.[详解]make charges for对......收 (费) ; 索 (价) 。charge也可以用作动词, 表示“收费, 索价”, 如：1) We don't charge anything for that. (对此我们不收费。) 2) How much do you charge for a haircut? (理个发要收多少钱?)

49. D. missing.[详解]missing 缺少的; a book with some missing pages. (缺页书) 。

48. B. outset.[详解] outset 开端, 开始, from the very outset (从一开始) 。outbreak爆发, 发生。outcome结局. income 收入。output 产量。

47. B. position.[详解]position 此句中指“地位” (不可数, 有时加不定冠词), 如：1) She was a woman of high position. 2) a high (low) position society.

46. A. popular.[详解]popular 此处意为“ (=liked and admired) 受爱戴的, 有名声或声望的”。

45. B. in case of.[详解] in case of 参看Ⅲ,94注释。In line with (=in agreement with) 与......一致, 符合：His actions were not in line with his belief.本句中in line with...作表语。In line with history and social evolution socialism is inevitable.本句中in line with引导地短语作状语, 意为“按照”。For the sake of 为了......起见。At the sake of冒......的风险。

44. C. carry on. [详解]carry on 继续, 参看Ⅲ,28。

43. C. narrow. [详解]have a narrow escape 幸免遇难。