题目：
| 完形填空。 | ||||
| Bill Trew worked on the night shift(夜班) in an old coal mine called Park Deep. Day and night 180 miners worked underground there, more than 6,00 feet 1 .They all took their 2 of night work, but Bill always worked at night. he said he 3 it. One day he came home as usual at half past seven in the morning. He had his 'Supper', 4 he called it, and went to bed. An 5 dream troubled his sleep. 6 , the only thing he remembered about it was- a throbbing(跳动) blue light. Bill got up in the afternoon as usual. It was a 7 getting up-because he could still see the blue light in front of his eyes. As the evening 8 darker, the light grew stronger. Bill got ready for the night shift. But by 8 o'clock the blue light was so bright that he could 9 see anything else. He and his wife were very puzzled. Bill had never been 10 before. "Don't go to work,"Mrs.Trew said. "If it isn't better 11 tomorrow, I'll have to send for the doctor." Bill didn't go to work. He sat in an armchair, 12 but with closed eyes. 13 then the blueness was like a living thing. It surrounded him, silent, throbbing. The family went to bed but Bill wasn't 14 : he stayed in his armchair. At 11 o'clock a long, loud explosion(爆炸) 15 the ground. Bill opened his eyes and 16 to his feet. The blue light was 17 ! He rushed outside. Someone shouted, "Gas! gas in Park Deep! Oh pity the night shift!" The gas explosion killed 179 men in Park Deep. The mine was destroyed 18 .Bill Trew has never 19 wondering. The blue light: why did it make him the only man 20 for work that night? | ||||
|
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0629/b1f6eff5c1c1ebf2019cf90e10b2e059.html
下面是错误答案，用来干扰机器的。
CD 酸的定义为电离时生成的阳离子全部是氢离子的化合物。碱的定义为电离时生成的阴离子全部是氢氧根离子的化合物。要注意A、B没有“全部”二字，都是不正确的。盐电离时生成的阳离子一般为金属离子，也可以是铵根...
