46. C stick out(=keep on doing sth。until it is done，no matter how long，hard，or unpleasant) 坚持下去，此外，stick out 还可表示 (stand out) 突出。

[注意] stick out与keep to 均有“坚持”的含义。stick out 特指“坚持下功夫 干一件事，不完成决不收兵”；而keep to 则强调“坚持、遵守、坚守”诺言、 规则、原则、精神、岗位。可见，keep to 的英文释义为 ability by；adhere to，stick closely to。例如: keep to one's promise(遵守诺言)；keep to the rules of a game(遵守比赛规则)；keep to a principle(坚持原则)；keep one's pos(坚守岗位)。因此，我们可以说keep to相当于 stick to，而区别于 stick out.

45. D in stock(=having sth. ready to sell or use；in present supply) 有 现货供应; in demand(=needed；wanted；) 有需求; in need(=in poverty，in trouble)在贫困中，在困难中: A friend in need is a friend indeed。in store(=saved up in case of need； ready for use for some purpose) 储备待用:于。

[注意] in stock 强调商店备有现货以供出售，而 in store 则指储备物品以供急 需使用。此外 in store 还可以表示“等待着，必将发生”。例如: I have a surprise in store for you.(我有一个你料想不到的消息要告诉你。)

44. D sweep sb，off sb's feet 由两层意思，直义为“(浪等)把某人冲倒”， 转义是“使产生强烈的好感，使完全信服”，如: His speech swept them off their feet。(他的演说使他们五体投地.)

43. jump (=rise suddenly in price) 指“(价格)暴涨”。

42. C for good (=permanently)永久地:He says he's leaving the country for good. for long 长久地。按本题题意，用 for long 不妥。once upon a time 从前。once in a while 偶尔。

41. B shut out(=prevent from coming in; block)排除，排斥：They shut out our dust by having double windows.(他们用双层窗户防尘。). put out扑灭；get across越过；使人了解；come across偶然遇到。

40. D consultation商议：hold a consultation with sb. about sth.(与某人商谈某事)。

conference讨论会；participation参加，参与；intervention干预，干涉。

39. D spoiled使......扫兴.

38. A piece together拼合，拼凑；take off起飞；break away from脱离；pull out拔出；驶出；(车)减速。

37. B scratch抓，搔。此外，有一常用习语：scratch one's head over sth.对某事迷惑不解，搔头皮。Snatch掠夺；stretch拉长，延伸，撑大；squeeze压榨，挤。