题干

两列火车同时从天津和济南出发,相向而行,经过2小时相遇。从天津开出的火车每小时行79千米,从济南开出的火车每小时行100千米。天津和济南相距多少千米?
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答案(点此获取答案解析)

解:(79+100)×2= 358(千米)

答:天津和济南相距358千米。

同类题2

阅读秦文君的《红书包》,完成问题。

       20年前,我还是个小学四年级学生。

       有一回,同班的汪丽娜背了一只崭新的红书包,那书包简直美极了,我只看它一眼,心里就发颤。

       那天,我被这美丽的红书包缠绕着,别的一切都退得远远的,我甚至感到,快活与否,就同这书包紧密地连在了一起。放学时,汪丽娜就走在我的前面,我听着大伙都在议论她的书包漂亮,不觉有点儿生她的气。在此同时,一个念头升了起来:我一定也要有一只这样的红书包。

       一连几天,只要一放学,我就上大街,专跑文具店。终于,在一家小文具店的橱窗里,找到了这样的红书包。隔了层光闪闪的橱窗玻璃,我发现它更吸引人了。我在它跟前站了许久,一会儿(    )看,一会儿(    )看,过会儿(    ),单眼看。“没有什么能同它比美。”真的,当时我就那么想。

       我又奔又跑地赶到车站,等了三辆公共汽车,才等到母亲从车上下来。她惊讶地看着我,我什么也不说,拉着她的手就奔那家文具店。到了那儿,就指着红书包说:“给我买吧,妈妈。”

      “可你的书包还挺新的,而且也很漂亮。”

       我不知怎的就想哭,一边死活不肯离开,像是打算在这儿站一辈子。妈妈摸摸我发烫的额头,心就软了。没想到,她摸出钱夹要付钱时,才发觉带的钱不够。可在这时,店要打烊①了。

       夜里,我老做梦,梦见店里的红书包让人用一把大剪刀剪坏了,急得我大嚷大叫起来。爸爸把我唤醒,小声对我说,明天,他下了班就去把我的红书包买回来。

       第二天的整个白天,我都非常快活,而且还很紧张很激动。见了汪丽娜,我就想:我马上就可以背上那只红书包,同你的那只毫无差别。到了傍晚,我突然又变得惴惴不安:万一那店里的书包都让别人买去了呢!于是,我三番五次往那里跑,弄得店里人都开始皱起眉头来打量我。

       晚上,爸爸推着自行车,一手高高举着红书包回来了。我抢过那只鲜红的书包,高兴得打转。等乐过之后,才看见妈妈正在给爸爸搽松节油。原来,为了快点赶到店里,爸爸骑车时同一部黄鱼车撞在一起,膝盖上肿起老大一块。

       我的心情沉重起来:我怎么会不顾一切地迷上这红书包的,竟没看见爸爸的膝盖为了它受伤了呢。

       爸爸说:“爱美不是件坏事,可生活中美的东西太多了,你跟在别人后面,永远也是跟不过来的,能体会美才是最美的事情。”

       第二天,我背着红书包兴高采烈地去学校,在校门口碰见汪丽娜,谁知她已换了一个紫色的新书包,比原来的红书包漂亮不知多少倍。

       从那天起,我似乎更加关注一切美丽,美的旖旎②永远能给予我无限的灵感,可是从此就没有再像过去那样焦躁不安了。能懂得美,懂得美在何处有时就很知足了,也很快乐,世界上最美的莫过于存着的爱美的心。

       后来,那个红书包用旧了,而我一直珍藏着它。不为别的,就为它成了我生活的一个启示录。

                                                                                                                                                                             (选自《秦文君文集》,有改动)

     【注】①打烊:关门停止营业。②旖旎:柔和美好。

同类题3

阅读理解

    When I was 12, all I wanted was a signet(图章)ring. They were the “in” thing and it seemed every girl except me had one. On my 13th birthday, my Mum gave me a signet ring with my initials(姓名首字母) carved into it. I was in heaven.

    What made it even more special was that it was about the only thing that wasn't being “replaced”. We'd been burnt out in fires that swept through our area earlier that year and had lost everything—so most of the “new” stuff(东 西)we got was rally just to replace what we'd lost. But not my ring. My ring was new.

    Then, only one month later, I lost it. I took if off before bed and it was missing in the morning. I was sad and searched everywhere for it. But it seemed to have disappeared. Eventually, I gave up and stopped looking for it. And two years later, we sold the house and moved away.

    Years passed, and a couple of moves later, I was visiting my parents' when Mum told me that she had something for me. It wasn't my birthday, nor was it Easter or Christmas or any other gift-giving occasion. Mum noticed my questioning look. “ You'll recognize this one.,” she said smiling.

    Then she handed me a small ring box. I took it from her and opened it to find my beautiful signet ring inside. The family who had bought our house 13 years earlier had recently decided to do some redecorations, which included replacing the carpets. When they pulled the carpet up in my old bedroom, they found the ring. As it had my initials carved into it. They realized who owned the ring. They'd had it professionally cleaned up by a jeweler before sending it to my mother. And it still fits me.