题干

函数y=x+
4
x
-
1
x>1的最小值是(      )

A:3

B:4

C:5

D:6

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答案(点此获取答案解析)

C

同类题2

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火车上的相遇

邓迎雪

    ①大二的时候,他的生活就像一幅乱七八糟的调色板——逃课、喝酒、玩网游、谈恋爱,很忙,但都与学业无关。颓废、不求上进,他自己并不是没有警醒,只是计划容易,执行好难。他还是会隔三岔五地玩个通宵。

    ②暑假,他原打算在学校补补功课,再打份工,可是朋友又邀他参加同学们的假期游。无奈,他只好再次搁置计划,登上了开往西安的列车。正值暑运,车上人满为患,他们只买到两张卧铺票。大家只好轮换去休息,余下的就在硬座车厢里打扑克,玩得不亦乐乎。

    ③凌晨三点,他带着浓重的困意去卧铺车厢休息,人太多,走道里挤满了困倦不堪的人们,小小的空间里,人们横七竖八地或坐或躺。他忽然像针扎一样,大声叫起来,只见他的父亲蜷在角落里,背倚着包裹,微仰着脸睡着。世界很大,有时却又很小,他竟会在这里和父亲相遇。 

    ④父亲看见他也大吃一惊。父亲说,他是去郑州的建筑队干活,农活忙完了,正好出去转转。望着父亲皱巴巴的汗衫,乱蓬蓬的头发,黝黑苍老的脸,他知道父亲故作轻松的话语,是不想让他担心。父亲问他去哪里,他嗫嚅着说出行程。父亲却鼓励他,年轻人就该这样,“读万卷书,行万里路”嘛。想到亮红灯的功课,他不敢看父亲的眼睛。

    ⑤那晚,父亲在他的卧铺位上睡得很香。送父亲下车后,他发现自己的口袋里多了200元钱,两张皱皱巴巴、浸着汗渍的钞票,让他觉着沉重、烫手。他忽然就没有了出游的兴致,那场旅行,他的眼前老是晃动着父亲满是皱纹的面容。从风景区回来时,他在父亲打工的城市下了车。天闷热得像个大蒸笼,暑气滚滚,空气里冒着干渴的味道。

    ⑥在郊外的建筑工地,他见到了正在忙碌的父亲。父亲正踩着用木板搭起的脚手架,叮叮当当地捆扎钢筋。看见他,父亲急忙从脚手架上下来,心疼地责备他大热天里来工地做什么。看着父亲湿透的汗衫,被暑热熏得黑红的脸膛,他直觉着嗓子发堵,不知是汗水还是泪水从他脸上滑下,流进嘴里,咸涩的苦。

    ⑦正说着话,有工友从身边走过。父亲自豪地介绍,这是俺上大学的儿子。那工友又问在学校学的啥。念的是计算机,开学就大三了,父亲大声回答,又侧头看看他,一脸欣慰的幸福的笑。他心里五味杂陈,想想那两门挂科的功课,无地自容。

    ⑧他在工地呆了两天,才知道,那天父亲在火车上把仅有的钱都留给了他,现在的生活费是拿工钱代扣的。天气那么热,每天强体力的劳动,简单、粗糙的饭菜就是父亲全部的生活内容,他苦劝父亲回家,他留下来做工。父亲有些生气:“俺是干庄稼活的,这点累算啥,这哪是你读书人呆的地方,你好好读书,将来有出息,比啥都强。”

    ⑨这些年,他变得浮躁无比,忘记了自己的来处。如今,父亲烈日下的汗水,一滴一滴溅在他心里,唤醒了他沉睡的心。

    ⑩多年后,当他和父亲聊天,还常常会提到那年夏天。只是他没有告诉父亲,如果没有那次火车上的相遇,他不知还要挥霍多久的时光。

(选自《青年文摘》2013年第3期)

同类题3

阅读理解

    Arriving in Sydney on his own from India, my husband, Rashid, stayed in a hotel for a short time while looking for a house for me and our children.

    During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discover that his suitcase was gone. He was extremely worried as the suitcase had all his important papers, including his passport(护照).

    He reported the case to the police and then sat there, lost and lonely in strange city, thinking of the terrible troubles of getting all the paperwork organized again from a distant country while trying to settle down in a new one.

    Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my husband's name and was asking him a lot of questions. Then he said they had found a pile of papers in their trash can(垃圾桶) that had been left out on the footpath.

    My husband rushed to their home to find a kind family holding all his papers and documents(文件). Their young daughter had gone to the trash can and found a pile of unfamiliar papers. Her parents had carefully sorted them out, although they had found mainly foreign addresses on most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend.

    That family not only restored the important documents to us that day but also restored our faith and trust in people. We still remember their kindness and often send a warm wish their way.