问题
填空题
有三张卡片，上面分别写着0、2、5．小红和小明用这三张卡片轮流摆不同的三位数，规定摆出的三位数是奇数就是小红赢，否则小明赢．小红赢的可能性是______%．
答案
摆出不同三位数有：205、250、502、520，共4个，其中奇数有1个，
赢的可能性为：1÷4=25%．
答：小红赢的可能性是25%．
故答案为：25．
搜题请搜索小程序“爱下问搜题”
有三张卡片，上面分别写着0、2、5．小红和小明用这三张卡片轮流摆不同的三位数，规定摆出的三位数是奇数就是小红赢，否则小明赢．小红赢的可能性是______%．
摆出不同三位数有：205、250、502、520，共4个，其中奇数有1个，
赢的可能性为：1÷4=25%．
答：小红赢的可能性是25%．
故答案为：25．
| 阅读短文，用方框内所给单词的正确形式填空，使短文意思通顺、完整。注意：①每个词只能用一次。 ②每空限填一词，有些词需要做相应的变化。③其中有两个多余选项。 | |
Old buildings 1______ brick (砖) and stone walls. The walls hold up the 2______. In cities, many modern building 3______ as if they are made just of windows. Walls of dark glass reach high into the air. Many buildings are 4______ than 50 stories (层) tall. Are walls of glass strong 5______ to hold up the new buildings? No, The new glass walls do not hold up the buildings, 6______ they only cover up the frame (框架) made of steel. Have you ever watched a new building going up? The steel frame is built 7______. Then the glass walls are hung on the frame. When the building is 8______, the frame does not show. The outside looks like windows without walls. The glass walls shine 9______ the sun with no decoration (装饰). Many people find 10______ beautiful just as they are. |