48. Officers can’t work properly without certain important pieces of ______ (仪器) .

47. All kids can do so much in their_____________(生活、生命).

46. Everyone knows that Beijing is to hold the 29^th Olympic Games, the arrangements of which

will make the players and _________(客人)satisfied.

45. Zhang Ying, 35 years old, married once, is a _____________(幼儿园)teacher.

44. ---You are always full of energy. Can you tell me the secret?

---Taking plenty of e____________(锻炼)every day.

43.Various activities were organized, including the opening__________(仪式), lectures on popular science and meeting at which writers and readers communicated face to face.

42. Of course, you can never rely on the British summer weather, so taking an ____________(雨伞)along might be a good idea just in case.

41. Being happy is like an infectious d_________(疾病); it causes people to shrink away from the sufferer.

40. Of__________(当然), scientists cannot answer all of your questions.

39. Tony, a young ____(工程师)in a modern car factory, enjoys an adventure journey once a year.