45.Progress so far has been very good. ____,we are sure that the project will be completed on time.

　 A. However　　　 B. Otherwise　 C. Therefore　 D. Besides

44. I would like a job which pays more, but ________ I enjoy the work I’m doing at the moment.

　 A. in other words　　 B. on the other hand　　　 C. for one thing　　　 D. as a matter of fact

43. Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.

　 A. common B. normal　　　 C. ordinary　　 D. usual

42. _________ by keeping down costs will Power Data hold its advantage over other companies.

　 A. Only　　　 B. Just　　 C. Still　　 D. Yet

41. We’re trying to ring you back, Bryan, but we think we ________ your number incorrectly.

　 A. looked up　　　 B. took down　 C. worked out D. brought about

40. The company had about 20 notebook computers but only one-third _______ used regularly. Now we have 60 working all day long.

　 A. is　　 B. are　　　 C. was　　 D. were

39. When ______ different cultures, we often pay attention only to the differences without noticing the many similarities.

　 A. compared　　　 B. being compared　 C. comparing　 D. having compared

38. _______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.

　 A. As B. That　　 C. This　　 D. It

37. Don’t worry if you can’t come to _______ party. --- I’ll save ________ cake for you.

　 A. the ; some　　　 B. a ; much　　 C. the ; any　　 D. a ; little

36. We don’t keep winning games _______ we keep playing well.

　 A. because　 B. unless　　　 C. when　　　 D. while