Let A={ 1,2,3,4 } and R={ (1,2), (2,3), (3,4), (2,1) }. Which of the following is the matrix of the transitive closure of R? ( ) A. B. C. D. 如何将EXCEL生成题库手机刷题 > 下载刷刷题APP,拍照搜索答疑 > 手机使用 分享 反馈 收藏 举报 参考答案: C 复制...
根据首字母提示.用适当的词填空.每空一词.1.--- Do you like basketball? --- Yes, I do. It’s r .2.Mike’s b dinner is next. Let’s think about the food.3.--- Where is my hat? --- Oh, it’s on your h .4.Liu Xiang is a sports s .5.The model p
r5.1pep p25 u3 a let's learn 同步网课 2022-10-14 08:22 陕西
r3.1pep p7 u1 b let's play 同步网课 2022-08-31 11:15 陕西
根据音标写出下列单词。 1.Let’s keep the ___[ ?si:kr?t] between us. 2.Learners may have to take a___[?r?tn]exam before they pass their driving test 3.He is a man ___ ['?n?d] by the whole world. 4.We have nothing but ___ [pre?z] for the ...
百度试题 题目 Which property does R possess ( ) let A={1,2,3,4} and let R ={<1,2>,<2,2>,<3,4>,<4,1>,<4,2>} A.symmetryB.antisymmetryC.asymmetryD.reflexivity 相关知识点: 试题来源: 解析 B 反馈 收藏
我在一个地方看到是这样To pronounce R, open your mouth slightly, raise the middle and back of your tongue toward the roof of your mouth without touching it, and vibrate your vocal cords.在另一个地方看到是这样(1)Round your lip just a little(2)Raise the tip of the tongue towards the ...
2、教学 B. Let’s wrap it up Activity: 模特走秀 让学生利用身势来表演这四组形容词反义词,taller---shorter heavier---thinner older--- younger bigger---smaller,其他学生猜并拼写,同时帮 我完成板书。 看例子,归纳总结形容词变化规则: ①tall ---taller 一般在形容词后加 er. ②t...