题干

一辆汽车在平直公路上行驶,在10min内前进6km,停车10min后又以72km/h的速度匀速行驶10min,求:
上一题 下一题 0.0难度 选择题 更新时间:2010-02-07 05:10:33

答案(点此获取答案解析)

同类题1

阅读下面材料,从每题所给的A、B、C、D四个选项中选出最佳选项。

C

    Mrs. Tan was feeling nervous because her son Tom's exam was coming. This was his national exam and they did not know what to expect. Tom's weakest subject was Chinese. So Mrs Tan had found a private teacher to give him extra lessons to improve his Chinese. Tom, on the other hand, was not showing any interest in the subject. He thought that the extra lessons would not be helpful to his grades at all. So he didn't put much effort into the lesson.

    One day after Tom's Chinese lesson, his teacher spoke to Mrs. Tan. She said that Tom was showing a callous attitude (冷漠的态度) to his work. She was worried about that he might not pass his Chinese exam if he continued being like this. She had no idea that the situation was becoming so terrible. She told the teacher that she would have a word with Tom about it.

    That evening, both Mr. and Mrs. Tan sat down with Tom and talked to him. They wanted to know why his attitude was so bad. They managed not to scold him but instead, talked to him kindly. At first, Tom said nothing. Then, he slowly told them he did not understand his lessons. He said that the teacher's pace (速度) of lesson was too fast for him. Mrs. Tan then advised him to speak up if it happened the next time so that his teacher could slow down. In addition, Mrs. Tan would let his teacher know that she needed to slow down her lessons a little.

    After that heart-to-heart discussion with Tom, the situation improved. His teacher taught him at a pace that was comfortable to him and he in turn, would speak up and ask questions whenever he had problems.

    By the time Tom sat for his exam, he was feeling more confident. When his results came out, he was excited as he had improved a lot in Chinese. Both his parents as well as his private teacher were very proud of him. It goes to show that with an effort, all things are possible.

同类题5

阅读下面的文言文,完成文后各题。

    赵南星,字梦白,高邑人。万历二年进士。除汝宁推官。治行廉平,稍迁户部主事。二十一年大计京官,与尚书孙鑨秉公澄汰。首黜所亲都给事中王三余及鑨甥文选员外郎吕胤昌,其附丽政府及大学士赵志皋弟皆不免,政府大不堪。给事中刘道隆因劾吏部议留拾遗庶僚非法。得旨,南星等专权植党,贬三官。

    光宗立,起太常少卿。拜左都御史,慨然以整齐天下为任。寻代张问达为吏部尚书。当是时,人务奔竞,苞苴恣行,言路横尤甚。每文选郎出,辄邀之半道,为人求官,不得则加以恶声,或逐之去。选郎即公正无如何,尚书亦太息而已。南星素疾其弊,锐意澄清,独行己志,政府及中贵亦不得有所干请,诸人惮其刚严不敢犯。有给事为赀郎求盐运司,即注赀郎王府,而出给事于外。知县石三畏素贪,夤缘将行取,南星亦置之王府。时进士无为王官者,南星不恤也。

    魏忠贤雅重之,尝于帝前称其任事。一日,遣娣子傅应星贽见,南星麾之去。尝并坐弘政门选通政司参议正色语忠贤曰主上冲龄我辈内外臣子宜各努力为善忠贤默然怒形于色大学士魏广微,南星友允贞子也,素以通家子畜之。广微入内阁附忠贤,尝三至南星门,拒勿见。又尝叹曰:“见泉无子。”见泉,允贞别号也。广微恨刺骨,与忠贤比而龅南星。忠贤及其党恶南星甚,每矫敕谕,必目为元凶。于是御史张讷劾南星十大罪。系之狱,坐南星赃万五千。南星家素贫,亲故捐助,始获竣。卒戍南星代州。嫡母冯氏、生母李氏,并哀恸而卒。子生七龄,惊怖死。南星抵戍所,处之怡然。

    庄烈帝登极,有诏赦还。巡抚牟志夔,忠贤党也,故迟遣之,竟卒于戍所。崇祯初,赠太子太保,谥忠毅。

(节选自《明史》二百四十三卷)

【注】①苞苴:贿赂。②夤(yín)缘:攀附权贵。