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东师15春《英语精读(三)》在线作业1试卷_最新

南开大学20秋学期《大学英语(一)》在线作业答案资料2

[南开大学]20秋学期《大学英语（一）》在线作业提示：请认真学习本资料，并完成课程复习！！100 一、单选题 (共 50 道试题,共 100 分) 1.She ( )work next Monday. A.is starting B.starts C.started [本题参考选择是]：A 2.The quality inspector ____ finished products carefully to make sure each was in good condition. A.looked over B.found out C.held up D.stuck to [本题参考选择是]：A 3.I go swimming on ( ) Thursdays for two hours. A./ B.a C.an [本题参考选择是]：A 4.( ) people are my friends. ( ) people are my husband's friends. A.These, Those B.This, That C.Here, There [本题参考选择是]：A 5.Do you have( ) friends in Shanghai? A.many B.any C.not [本题参考选择是]：B 6.A:( ), Polly? B:I'd like a glass of wine, thank you. A.Do you want B.What would you like C.What you like [本题参考选择是]：B 7.I'm a nurse. I work ( )David ( )the same hospital.

★离散数学东北师范大学离线作业与答案

离线考核《离散数学》满分100分一、计算题（共25分） 1. 设集合{}c b a A , , =，R 是A 上的二元关系，{}b c c a b a a a R , , , , , , , =，试求： (1) ()A P ；（8分） (2) R 的关系图与关系矩阵R M ；（8分） (3) ()R r 、()R s 、()R t 。（9分）设集合{}c b a A , , =，R 是A 上的二元关系，{b c a b a a a R , , , , , , , =，试求： (1) ()A P ； (2) R 的关系图与关系矩阵R M ； (3)()R r 、()R s 、()R t 。解：(1) (){}{}{}{}{}{}{} {}c b a c b c a b a c b a A P ,,,,,,,,,,,,Φ= (2) ???? ? ??=010000111R M 关系图为：

(3) (){}b c c a b a c c b b a a R r ,,,,,,,,,,,= (){}c b c a c c a a b b a a a R s ,,,,,,,,,,,= (){} R b c a b a a a R t ==,,,,,, 二、证明题（每小题15分，共75分。） 1.证明等价式：()()()()C Q P A C Q P A C A Q P →?∧=∨∨→∧→∧∧。证明等价式： ()()()()C Q P A C Q P A C A Q P →?∧=∨∨→∧→∧∧ 证明： ()() ()()() ()() ()()()()()()()()()()()()()()()()()()()()()C Q P A C Q P Q P A C Q P Q P A C Q P Q P A C Q P Q P A C Q P A Q P A C Q P A C Q P A C Q P A C A Q P C Q P A C A Q P →?∧=→?∧?∨∧∧=→∨∧?∨??∧=→∨∧?∨?∨??=∨∨∧?∨?∨?=∨∨∨?∧?∨?∨?=∨∨∨?∧∨?∨?∨?=∨∨∨?∧∨∧∧?=∨∨→∧→∧∧ 2. 证明：树是一个偶图。证明：树是一个偶图。证明：设E V T ,=是一棵树，对任意的V u ∈，令 {}为奇数之间的基本通路的长度与u v V v V ∈=1 {}为偶数之间的基本通路的长度与u v V v V ∈=2 (1) 因为T 是连通的，所以对任意的V v ∈，必有1V v ∈或2V v ∈，因此V V V =?21，(2) 因为T 是树，v 与u 之间的基本通路有且只有一条，所以Φ=?21V V ， (3) 因为T 是树，T 中无回路，所以1V 或2V 中的任意的两个顶点不可能是相邻的。综上，T 是一个偶图。

高级英语20秋在线作业1-0005

高级英语19春在线作业1-0005 Which of the sentences below apply the rhetorical device of metaphor? A:She felt her cheek pale and cold and, out of a maze of distress, … B:He would drown her. C:She sat at the window watching the evening invade the avenue. D:The boat blew a long mournful whistle into the mist. 答案：A,B Antithesis is applied in ________. A:If a mere sentiment justifies cruelty, why stop at a sentiment for the whole human race? B:It is so deep a need that it will find harmful outlets of this kind unless innocent outlets are at hand. C:If it is not defended on the ground that it reduces human suffering, on what ground can it be defended? D:If we find a man giving pleasure it is for us to prove (if we criticize him) that his action is wrong. But if we find a man inflicting pain it is for him to prove that his action is right. 答案：B,D Which of the following sentences use the rhetorical device of hyperbole? A:Death would be too kind and brief.

南开大学《大学英语(二)》离线答案

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南开2015年3月考试大学英语(二)离线作业答案

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电子商务英语题库(南开大学在线作业题库)

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PartⅢ答题纸：请将46－50题答案填写在如下表格中，否则成绩无效。 PartⅣ答题纸：请将（1）-（6）题答案填写在如下表格中，否则成绩无效。

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