问题
单项选择题
设“甲和乙都不是美国人”、“若甲不是美国人，则：是美国人”和“乙不是美国人，而甲是美国人”这三个判断中只有一个为假，则可必然推出下列判断中为真的是（）。
A.“甲和乙都是美国人”
B.“甲是而乙不是美国人”
C.“甲不是而乙是美国人”
D.“甲和乙都不是美国人”
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
设“甲和乙都不是美国人”、“若甲不是美国人，则：是美国人”和“乙不是美国人，而甲是美国人”这三个判断中只有一个为假，则可必然推出下列判断中为真的是（）。
A.“甲和乙都是美国人”
B.“甲是而乙不是美国人”
C.“甲不是而乙是美国人”
D.“甲和乙都不是美国人”
参考答案：B
阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出能填入相应空白处的最佳选项，并在答题卡上将该项涂黑。 A little boy had the job of coming to school early each day to start the fire and warm the room before his teacher and his classmates arrived. One 36 they arrived to find the schoolhouse full of flames. They dragged the 37 little boy out of the flaming building more dead than alive. He had major 38 over the lower half of his body. From his bed the horribly(可怕地) burned little boy heard the 39 telling his mother that her son would 40 die for the terrible fire which had devastated(毁坏) the lower half of his body. 41 the brave boy didn’t want to die. He made up his mind that he would 42 and he succeeded. When the 43 danger was past, he again heard that 44 the fire had destroyed so much flesh, it would almost be 45 if he had died. Once more, he would not be a cripple(跛者). He would walk. But 46 from the waist down, he had no motor ability. His thin legs just 47 there, all but life-less. Back from the hospital, every day his mother would massages(按摩) his little legs, but there was no 48 . One sunny day his mother wheeled him out into the 49 to get some fresh air. This day, instead of sitting there, he 50 himself from the chair. He pulled himself across the grass, 51 his legs behind him. He worked his way to the white 52 . With great effort, he 53 himself up on the fence. Then, he began dragging himself along the fence, 54 that he would walk. He started to do this every day. Finally through the daily massages and his iron determination, he did 55 the ability to stand up, then to walk by himself and then to run. This determined young man, Dr Glenn Cunningham, ran the world’s fastest mile!
|