1.若正比例函數(shù)(≠)經(jīng)過點(，)，則該正比例函數(shù)的解析式為___________.

49. have an eye for　 對…有鑒賞力　　　　 keep an eye on　 照看　　　　

catch one's eye　　 吸引…注意　　　　 in the eyes of sb 在…心目中

have a good/poor eyesight　 視力

48. to the full extent of one's power 竭盡所能

to some extent/degree 到某種程度為止　　 To some extent, you are correct.

47. express way 快車道　　 express oneself　 表達　　 express my thanks 表達謝意

with a strange expression　 帶著一種奇怪表情　　　　　

beyond expression無法表達　　 The scenery was beautiful beyond expression.　　

46. expose sty in it's true natural 揭露…本性　　　　 expose sty to 使…接觸

Don't expose it to the sun. 不要讓它接觸陽光.　　　

Expose Children to some good books.

45. explore the unknown　 探索　　 explore the castle

44. do/make/perform an experiment　　　 carry out an experiment 作實驗

43.an unusual experience　 一個不同尋常的經(jīng)歷　　　　　

He has no experience of life at all. 他全無生活經(jīng)驗。an experienced teacher 一個有經(jīng)驗教師

42. traveling expenses 旅費　　　 cut down one's expense　 減少…費用

at the expense of 以…為代價　 He finished the work at the expense of his health. (at the cost of)

41. expect sb to do sty / that　　 The city was more beautiful than we had expected

expect too much of sb 對…期待過多