皮皮学，免费搜题
登录
搜题
【简答题】
设 是 的所有Borel集的σ-代数．证明 ．
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
【单选题】He has always regretted _____ the opportunity at college. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
not to have taken
B.
not having taken prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
not to take
D.
not take
【简答题】He has two big round Chinese __________ (wood) tables.
【单选题】Mr. Brown is 102 years old. He is leading a full and active life. Why has he【21】so long? Many【22】would like to know the answer to the question. They are studying groups of old people all over the worl...
A.
been
B.
worked
C.
stayed
D.
lived
【简答题】听录音，选择正确的答句。 ( ) 1. A. I wear size 16. ( ) 2. A. He has a fever. ( ) 3. A. She is a TV reporter. ( ) 4. A. I went fishing. ( ) 5. A. This weekend. ( ) 6. A. It's windy and cold...
【简答题】Billy is four years old and in the ninth grade. He has a 26 job which gets him 27 at five o’clock every morning. He is a 28 . Each morning, Billy leaves the house at 5: l5 to go to the corner 29 t...
【简答题】Sam goes home from school. He’s hungry(饿的).And he has a lot of homework. He wants to see Mike and 26 football, too. He doesn’t have 27 time. “Hello，Sam，”says Mrs Green.“ 28 is school today? ” “Fine. B...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
