参考答案 1—10： CCBAA CBCCA 11—20 ：BABBCABABC 21—30：CBDBDACABD 31—40：BBCDCFAEDB 41—50：DABBCADCBA 51—60：DCABDDACCD 61．purchased 62．were 63．why 64． to take 65．should 66．mine 67．getting 68．quicker 69．to 70．so／and 书面表达 Hello, everyone！Today, I would like to make a speech on perseverance． If you ask me what contributes to one’s success，I would say every bit of effort matters．Constant dripping wears away the stone，as the saying goes．One’s talent is indeed a great advantage．but it can’t take the place of perseverance．If a person always looks for excuses for not making effort constantly he will always be some distant away from success． Tu Youyou，the Nobel Prize winner，has made all her efforts to find a cure for malaria．Never did she stop doing her research until she succeeded in extracting artemisinin．This medicine has saved many people’5 lives who suffered from malaria．Her experience proves that perseverance plays an important role in achieving success． Thanks for listening．
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