题干

是方程的两个根,则的关系是(   )

A:

B:

C:

D:

上一题 下一题 0.0难度 选择题 更新时间:2017-07-26 06:40:31

答案(点此获取答案解析)

B

同类题3

完形填空

    Everyone has experienced ups and downs in his life, and I am no exception. I am an aerospace engineer from India. I was told by my relatives, close friends and others that it was1for a non- IT student to pursue a master's degree in IT and graduate from a US university.

    I had never taken courses2to computers or programming. I was never interested in being a3, but things changed. Computers became my companion and I4how dependent on them I was. I5imagining the back end processes happening inside the CPU and they amazed me. That's why I6 to pursue a master's degree in IT.

    At first, it was rather too7. Coming from a middle-class family, the huge cost per credit was a big8. My English accent was terrible. Most9, the course seemed impossible at first. But I never 10

    I got a few offers, but I decided to choose my university 11it promised its students to help them learn practically. During my first month, it was difficult to understand the Americans' 12and finish my assignments. But I never gave up. I 13two miles to the university every day so that I could use my travel money to buy a meal. I started looking for 14and I got an offer to work as a student assistant, which meant lifting benches and chairs every day.

    I took it as a(n)15, and I believed that hard work was my strength. Right now I am graduating with a GPA of 3.96/4 and a job offer from a multinational company that has asked me to start right after 16 

    If you think you can never achieve something, you need to 17yourself and start working on your 18  Hard work always pays off. To be 19  you need to start from somewhere and always question yourself about the limits of how far you would go to 20your goals.

同类题5

法制是人类共有的精神财富,是社会进步的重要标志。阅读下列材料回答问题。

材料一  中国法典的缘起与(罗马)查士丁尼法典的组成方式有相同之处……限制《中国法典》之外的出版物的发行(政府除外),罗马亦是如此:两国都各自以公告、律令和诏书等形式立法,还有诸如过继、家庭财产共同占有关系等都有相同之处。

——田涛《西方人眼中的中国法律接触与碰撞》

材料二  新兴地主阶级反对奴隶主贵族垄断法律,坚决要求把成文法律公布出来,以保护他们的私有财产和其他权利。汉文帝接受贾谊的“儒家‘兴礼乐’,更新秦朝法律,‘刑不上大夫’”的建议。汉律规定,对普通人犯随时逮捕,对有贵族官僚身份的人犯,如需要逮捕的,必须先奏请皇帝批准,逮捕后不加刑具,以示宽容。刘邦时,法令规定商人“不得衣丝乘车”,吕后、惠帝时规定“市井子孙不得为官吏”。

——据李小兵《中国古代法律制度》整理

材料三  公元前3世纪左右,平民在法律上已取得与贵族平等的地位,开始享有完全的公民权。到公元212年,罗马皇帝卡拉卡拉颁布敕令,授予一般臣民以公民权。帝国初期罗马法学家们讲的“平等”,不仅是建立在奴隶制基础上的平等,而且也是建立在罗马奴隶制社会相当发达的私有制和商品交换基础上的平等。古希腊多葛学派进一步提出自然法体现人的理性的观点。古罗马思想家西塞罗和后来的法学家们继承并系统论述、论证自然法学说。

——沈宗灵《略论罗马法的发展及其历史影响》

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