23. A healthy life is frequently thought to be _D_ with the open countryside and homegrown food.

　　A tied B bound C involved D associated

　　be involved with 牵涉，卷入; be associated with 与。..相关，联系起来。

　　homegrown food 自家种的食品; wine 葡萄酒; house wine 自家的酒。

　　33. The traditional approach _A_ with complex problems is to break them down into smaller， more easily managed problems.

　　A to dealing B in dealing C dealing D to deal

　　approach n. 方式，方法; approach to + 动名词。

　　43. It’s already 5 o’clock now. Don’t you think it’s about time _C_?

　　A we are going home B we go home C we went home D we can go home

　　it’s about time后面加句子，要用一般过去时来体现虚拟语气。

　　44. Lightning is a _A_ of electrical current from a cloud to the ground or from one cloud to another. [Lightning n. 闪电]

　　A rush B rainbow C rack D ribbon

　　rush n. 冲撞，冲击，撞击; rainbow n. 彩虹，幻想; rack n. 支架，挂架;

　　ribbon n. 缎带，丝带，绒带。

　　46. I’ve already told you that I’m going to buy it， _A_.

　　A however much it costs B however does it costs much

　　C how much does it cost D no matter how it costs

　　however在这里不表示转折，而是句子的引导词，这种情况下它相当于：no matter how。

　　意思是，我已经决定要买了，不管多少钱。

　　47. New York _A_ second in the production of apples， producing 850，000，000 pounds this year. [rank 排名，名列第几，强调名列前茅;Big Apple 纽约]

　　A ranked B occupied C arranged D classified