51. committee

　　 He sat on the committee when he was 45. 他45岁时成为委员会委员。

　　 52. company

　　 I shall be glad of your company on the journey. 我将很高兴与你同行。

　　 53. comparison¹

　　 This one costs more but is cheaper by/in comparison. 这件东西价钱贵了点，但是比较起来还是便宜。

　　 54. competition

　　 At the Olympic Games our representatives were in competition with the best swimmers from all parts of the world. 在奥运会上，我们的代表会与世界各地的最佳游泳选手角逐。

　　 55. condition

　　 The condition of my health prevents me from working. 我的健康情况不容许我工作。

　　 56. connection

　　 What is the connection between the two ideas？ 这两个想法之间有何关联？

　　 He set up in business and soon had a good connection. 他开业经商，很快就有了相当多的顾客。

　　 57. control

　　 The children are out of control. 孩子们不听管教。

　　 58. cook

　　 He is a good cook. 他是一个好厨师。

　　 59. copper²

　　 1） 铜 2） 铜币 3） （俚语）警察

　　 60. copy

　　 If you can‘t afford a new copy of the book， perhaps you can find a secondhand copy. 如果你买不起新书，你或许可以找到一本旧的。