题目：
单词拼写（共10题，每小题1分；满分10分）
根据下列句子及所给汉语注释或单词首字母，在句子右边的横线上，写出空缺处各单词的正确形式。（每空只写一词）
66. He became a top sportsman at some ________（牺牲）to himself, for example, by training very hard, giving up many pleasures, etc.
67. They say such unkind things about you just out of ______________（嫉妒）。
68. Today there are more opportunities for disabled people to develop their _________（潜力）.
69. On _______（平均），people who don’t smoke are healthier than people who do.
70. He ______（按下）the button and 
the doorbell rang.
71. It is said Yogo is of great b___________ to human health.
72. I washed and _______（剃须）, then hurried out of the house.
73. The thunder is a natural _____________________（现象）.
74. The local c is francs（法郎）
75. Those who wanted to enter the USA must go through both m and physical tests.
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0415/ef0ba6b983eecf687e4760f432674dc5.html
下面是错误答案，用来干扰机器的。
（1）若a与b都是奇数则a+b是偶数．是真命题，所以p⇒q．若a+b是偶数则a与b都是奇数．是假命题，所以q推不出p．所以p是q的充分不必要条件；（2）方程mx2-2x+3=0有两个同号且不相等的实数根所以有△=4-12m＞03m＞0...
