题干

解方程组:x+y+z=26x-y=12x-y+z=18
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答案(点此获取答案解析)

解:①+②得:2x+z=27,即:x=27
-
z
2
,①﹣②得:y=25

同类题4

阅读理解

    Every kid wishes to be an adult. Do you remember playing house as a child — pretending(假装) to be a grown-up like your parents? Did you imagine you were a doctor, a soldier or a teacher? At that time, anything seemed more exciting than being young.

    But now as grown-ups, some adults find they cannot leave childhood behind. They become “kidults”. Being a kidult has become a lifestyle choice among young people across Asia.

    Some kidults collect toys they once played with. Hello Kitty, Garfield, and Snoopy have many adult fans around the world. It is not unusual to see a 20-something woman with a big, Garfield-shaped cushion on her sofa or a Hello Kitty mobile phone accessory(配件、附件).

    Other kidults still enjoy children's stories and fairy tales. For example, the British publisher Bloomsbury even released an edition(发布一个版本) of the Harry Potter novels with an adult cover. That way, no one else on the subway will know that an adult is actually reading a children's book.

    “Kidults can be like vitamins to society. Adults who love their childhood most and hold on to pure, child-like emotion may be needed in such a rough and dry society,” said Lee So-jung, a professor at Hankuk University of Foreign Studies.

    He added that kidult culture may fill the generation gap between adults and kids. It could give children and their parents books, movies, and cartoon shows to enjoy together.

    Tim Greenhalgh, an adviser in London explained that some kidults just refuse to grow up. They hold on to childhood because working life in a busy and stressful city frightens them. Kidults would like to forget their age and openly show their fear of society and adulthood.

    “So, they can escape from increasingly busy and stressful lives that are hard to deal with,” Greenhalgh said.

同类题5

比较阅读下面的文字,回答问题。
                                                                                              (一)
         山泉作娇儿之态,泉声则是孩子如铃的笑语。受泉声的感染,鼎湖山年轻了许多,山径之幽曲,竹木之青翠,都透着一股童稚的生气,使进山之人如入清澈透明的境界,身心了无杂尘,陡觉轻快。行至半山,有一补山亭。亭已破旧,无可驻目之处,惟亭内一副楹联“到此已无尘半点,上来更有碧千寻”,深得此中精神,令人点头会意。
        站在亭前望去,满眼确是一片浓碧。远近高低,树木枝缠藤绕,密不分株,沉甸甸的湿绿,犹如大海的波浪,一层一层,直向山顶推去。就连脚下盘旋曲折的石径,也印满苔痕,点点鲜绿。踩着潮润柔滑的石阶,小心翼翼,拾级而上。越向高处,树越密,绿意越浓,泉影越不可寻,而泉声越发悦耳。怅惘间,忽闻云中传来钟声,顿时,山鸣谷应,悠悠扬扬。安详厚重的钟声和欢快清亮的泉声,在雨后宁静的暮色中,相互应答着,像是老人扶杖立于门前,召唤着嬉戏忘返的孩子。(节选自谢大光《鼎湖山听泉》)
                                                                                             (二)
        如果遇上大的障碍,水就嘟嘟哝哝地仿佛表示不满,这嘟哝声和从障碍上飞溅过去的声音,老远就可听见。然而这不是示弱,不是诉怨,也不是绝望,这些人类的感情,水是毫无所知的。每一条小溪都深信自己会到达自由的水域,即使遇上像尼尔布鲁士峰一样的山,也会将它劈开,早晚会到达……
水流在克制的嘟哝声中稳稳地流淌着,它们兴奋得不能不互相呼唤:许多支有力的水流都流到了一起,汇合成了一股大的水流,彼此间又说话又呼唤——这是所有来到一起又要分开的水流在打招呼呢。(节选自普里什文《林中小溪》)