皮皮学，免费搜题
登录
搜题
【单选题】
三个箱子，第一个箱子中有4个黑球，1个；第二个箱子中有3个黑球，3个；第三个箱子中有3个黑球，5个. 现随机地取一个箱子，再从这个箱子中取出一个球，已知取出的球是，此球属于第一个箱子的概率为( )A.
40/53
B.
10/53
C.
53/120
D.
20/53
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Which season do you like best ? why? can you describe a bad weather you once met? 可以参照答案的答题模式进行口语练习。
【简答题】I . Match the questions with the answers. 1. How did you find the city? 2. How about the weather there? 3. How about the traffic in that city? 4. Which attraction do you like best in Australia? A. It ...
【简答题】二、翻译句子(将下列句子翻译成汉语)50分 1. What do you think of the movie? 2. I love the fresh air in the mountains. 3. How is the weather in your hometown? 4. Which season do you like best? 5. It is very cold in the w...
【简答题】Match the questions with the answers. 1. How did you find the city? A. It has a moderate climate. 2. How about the weather there? B. It is ...
【简答题】Match the questions with the answers. 1. How did you find the city? A. It has a moderate climate. 2. How about the weather there? B. It is really busy. 3. How ab...
【简答题】禅宗是纯粹中国化的佛教，它的实际创始人是_____。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
