题干

在复平面内,O为原点,向量对应的复数为8+3i,关于y轴对称,则点B对应的复数为(  )

A:8-3i

B:-8-3i

C:3+8i

D:-8+3i

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答案(点此获取答案解析)

A

同类题4

    When I was growing up in America, I was ashamed of my mother's Chinese English. Because of her English, she was often treated unfairly. People in department stores, at banks, and at restaurants did not take her seriously, pretended(假装) not to understand her, or even acted as if they did not hear her.
    My mother has realized the disadvantages of her English as well. When I was fifteen, she used to have me call people on phone to pretend I was she. I was forced to ask for information or even to yell at people who had been rude to her. One time I had to call her stockbroker(股票经纪人). I said in a voice that was not very convincing, “This is Mrs. Tan.” And my mother was standing beside me, whispering loudly, “Why he doesn't send me the check. It's already two weeks late.”
    And then, in perfect English I said: “I'm getting rather anxious .You agreed to send the check two weeks ago, but it hasn’t arrived.” Then she talked more loudly. “What does he want? I’ll come to New York and say it in front of his boss.” And so I turned to the stockbroker again, “I can't accept any more excuses. If I don’t receive the check immediately, I have to speak to your manager when I am in New York next week.”
    The next week we ended up in New York. While I was sitting there red-faced, my mother, the real Mrs. Tan, was shouting to his boss in her broken English. When I was a teenager, my mother’s broken English embarrassed (使困窘) me. But now, I see it differently. To me, my mother’s English is perfectly clear, perfectly natural. It is my mother tongue. Her language, as I hear it, is clear and direct. It was the language that helped me form the way I saw things, expressed ideas, and made sense of the world.

同类题5

阅读材料,回答问题。

材料一  人口的集中固然对有产阶级起了鼓舞和促进发展的作用,但是它更促进了工人的发展。工人们开始感觉到自己是一个整体,是一个阶级;他们已经意识到,他们分散虽然是软弱的,但联合在一起就是一种力量。这促进了他们和资产阶级的分离,促进了工人所特有的、也是在他们的生活条件下所应该有的那些见解和思想的形成,他们意识到了自己的受压迫地位,他们开始在社会上和政治上发生影响和作用。大城市是工人的发源地:在这里,工人第一次开始考虑到自己的状况并为改变这种状况而斗争;在这里,第一次出现了无产阶级和资产阶级的对立;在这里,产生了工会、宪章主义和社会主义。

——恩格斯《英国工人阶级状况》

材料二  1884年,英国费边社的基本纲领提出:“费边社的目的是以下列方法来改革社会:从个人和阶级所有制下解放土地和工业资本,把它们交给社会所有,以谋公众的福利。只有通过这个方式,全国各种自然的和既得的利益才能公平的为全国人民所分享,为了这些目的,费边社应注意传播社会主义思想,鼓吹以社会主义为根据的社会和政治改革,包括确立男女平等的公民权利。同时推广有关个人与社会在经济、伦理和政治方面的关系的知识,以实现这些目标。”

——蒋相泽主编《世界通史资料选辑》