题目

三角形内角之和等于180°。但是，在凹曲面上，三角形内角之和小于180°，而在球形凸面上，三角形内角之和大于180°。这说明①对同一个确定对象的认识可以有多个真理②真理是有条件的、具体的③真理和谬误往往是相伴而行的④任何真理都有自己适用的条件和范围A. ①④ B. ②③ C. ①③ D. ②④ 答案：【答案】D【解析】题中三角形内角之和等于180°这一真理只适用于平面几何，而凹曲面上和球形凸面上都不适用。这说明真理是有条件的、具体的，何真理都有自己适用的条件和范围，②④正确且符合题意；对同一个确定对象会产生多种不同的认识，其中只能有一个真理，①错误；③在材料中未涉及，完形填空阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。My husband and I insisted that our children were old enough to clean their rooms and make their beds . But they thought _____ . My complaints , even self-justified shouting , were always landing on _____ ears . Very often a whole hour’s scolding would end with their _____ into tears , I felt very frustrated . I realized I needed to _____ my method of “ mothering ” .One day when they were at school , I spent some time _____ their rooms . On their desks , in plain _____ , I left the cards : “ Dear Bill ( the other card was _____ to Sarah ) , your room was messy this morning and I’m sure you like it clean . Love , the Room Fairy . ” _____ arriving back , the children were _____ excited to receive the little note from the Room Fairy . The next day , their rooms were fairly tidy . Sure enough , there was another note from the Room Fairy _____ for them , thanking them for their nice “ gift ” of a clean room and _____ asking them to play a certain violin _____ . Each day , thank—you notes would be written differently to keep the ideas _____ .Sometimes the Room Fairy would propose a little _____ : “ If you can finish your homework and _____ your lessons before dinner , I’d like to watch a particular television program with you tonight . ” Sometimes some colored markers or other little items would be left in _____ of well-done jobs the day _____ ._____ I can’t remember how long “ the Room Fairy ” continued leaving her love notes . When they were age appropriate , we used various versions of Post-Its（贴条）. The bathroom mirror became the _____ center of our home . Appointments , notices about visiting relatives , lesson schedules , and changes in plans could be posted .We all benefited from and _____ the idea of sharing reminders and daily details of life through notes . I believe the true advantage of the Room Fairy notes survives in our frequent and enjoyable communication .1.A. indifferently B. gratefully C. doubtfully D. otherwise2.A. side B. deaf C. neither D. either3.A. crying B. breaking C. bursting D. bumping4.A. adjust B. adopt C. access D. addict5.A. clearing B. tidying C. emptying D. searching6.A. distance B. words C. speech D. sight7.A. sent B. read C. delivered D. addressed8.A. As B. At C. In D. Upon9.A. more than B. rather than C. no more than D. other than10.A. asking B. waiting C. praying D. expecting11.A. politely B. happily C. gently D. toughly12.A. music B. song C. piece D. tone13.A. respectable B. uninteresting C. incredible D. fresh14.A. challenge B. question C. suggestion D. advice15.A. go with B. look up C. go over D. look into16.A. response B. answer C. praise D. honor17.A. ahead B. before C. over D. ago18.A. Actually B. Even so C. Even if D. Though19.A. life B. main C. memory D. reminder20.A. learned B. appreciated C. shared D. thanked