题干

如果m是任意实数,则点P(m-4,m+1)一定不在(   )

A:第一象限

B:第二象限

C:第三象限

D:第四象限

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答案(点此获取答案解析)

D

同类题1

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    Could the device, smartphone or PC,which you're using affect the moral decisions you make when using it? To test it, researchers presented multiple dilemmas to a sample set of 1,010 people. The participants were assigned a device at random.

    One case of the questions participants were asked is the classic “trolley (有轨电车) problem”: A runaway trolley is headed towards five people tied up on a set of train tracks. You can do nothing, resulting in the deaths of five people, or push a man off a bridge, which will stop the trolley. The practical response is to kill one man to save five lives, which 33.5 percent of smartphone users chose, compared to 22.3 percent of PC users.

    “What we found in our study is that when people used a smartphone to view classic moral problems, they were more likely to make more unemotional, reasonable decisions when presented with a highly emotional dilemma, ”Dr Albert Barque-Duran, the lead author of the study, told City, University of London. “This could be due to the increased time pressure often present with smartphones and also the increased psychological distance which can occur when we use such devices compared to PCs.”

    As for why the researchers started this study, Dr Barque-Duran noted, “Due to the fact that our social lives, work and even shopping take place online, it is important to think about how the contexts where we typically face moral decisions and are asked to engage in moral behavior have changed, and the impact this could have on the hundreds of millions of people who use such devices daily.” It's clear that we need more research on how our devices affect our moral decision making because we're using screens at an ever-increasing rate.

同类题2

阅读短文,完成练习。
孔子
    孔子名丘,字仲尼,春秋时期鲁国人。他三岁时父亲就去世了,母亲带着他到山东曲阜住了下來。
    孔子年少时读书很用功。礼节、音乐、射箭、驾车、书写、计算等他都非常精通,因此,还没到30岁,名声便大了起來。当时有许多人拜孔子为师,他索性办了个书房,收起学生来。后来有人推荐,孔子在鲁国做了官。
    鲁定公把夹谷同齐国会盟的事告诉了孔子,孔子说: “齐国屡次侵犯我国,这次会盟,我们要提高警惕。”在夹谷会议上齐景公以礼相迎,还举行盛大宴会。宴会上,齐国礼官给鲁定公奏“四方之乐”。一队武士手持刀剑,在音乐声中蜂拥而上,鲁定公吓得面如土色。孔子见状,说: “两国君主举行友好会晤,为什么要舞戈弄剑?”齐景公自觉理亏,挥手叫武士退下,并换上“宫中之乐”。孔子因护卫有功,鲁定公更加信任他。
    夹谷会议后,齐国大夫认为孔子留在鲁国对齐国不利,就劝齐景公选80名歌女送给鲁定公。从此鲁定公天天吃喝玩乐,不管国事,孔子劝也没用,于是就领着学生离开鲁国,开始周游列国。
    孔子周游列国14年,先后到过卫、曹、宋、郑、陈、楚等国,希望推行他的政治主张。大家都很尊敬他却不重用他。回到鲁国后,他专心编书和教授学生,直到73岁死去。相传他有学生3000多人,有名的72人。他编了好多古代文化典籍,像《诗经》《尚书》《春秋》等。
    孔子死后,他的学生继续传授他的学说,形成了一个儒家学派。而他,就是儒家学派的创始人。
(选自《中国历史典故》选作本文时有改动)