题干

已知函数f(x)=a﹣
1
2
x
+
1
,若f(x)为奇函数,则a=____
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1
2

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B

    I first met Paul Newman in 1968, when George Roy Hill, the director of Butch Cassidy and the Sundance Kid, introduced us in New York City. When the studio didn't want me for the film— it wanted somebody as well known as Paul— he stood up for me. I don't know how many people would have done that; they would have listened to their agents or the studio powers.

    The friendship that grew out of the experience of making that film and The Sting four years later had its root in the fact that although there was an age difference, we both came from a tradition of theater and live TV. We were respectful of craft(技艺)and focused on digging into the characters we were going to play. Both of us had the qualities and virtues that are typical of American actors: humorous, aggressive, and making fun of each other— but always with an underlying affection. Those were also at the core (核心)of our relationship off the screen.

    We shared the brief that if you're fortunate enough to have success, you should put something back— he with his Newman's Own food and his Hole in the Wall camps for kids who are seriously ill, and me with Sundance and the institute and the festival. Paul and I didn't see each other all that regularly, but sharing that brought us together. We supported each other financially and by showing up at events.

    I last saw him a few months ago. He'd been in  and out of the hospital.He and I both knew what the deal was,and we didn't talk about it. Ours was a relationship that didn't need a lot of words.

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“海盗们”野外乐逍遥

    早晨,汤姆一觉醒来,迷迷糊糊不知身在何方。他坐起来,揉揉眼,向周围看了看。很快他想了起来。此时正值凉爽的、灰蒙蒙的黎明时分,林子里一片静谧,给一种甜蜜的安息与和平的气氛围扰着。树叶儿一动也不动,没有任何声音打扰大自然的酣眠。露珠儿还逗留在树叶和草叶上。一层白色的灰烬盖在那堆火上,一缕淡淡的烟直飘向天空。而乔和哈克都还睡得正香。

    这时,林子深处有只鸟儿叫了起来,另一只发出应和。随后又听见一只啄木鸟啄树的声音。清淡的晨光渐渐发白,各种声音也随之稠密起来,大地万物,一派生机。大自然从沉睡中醒来,精神抖擞地把一片奇景展现在这惊奇的孩子的眼底。一条小青虫从一片带露的叶子上爬过来,不时地把大半截身子翘在空中,四处“嗅一嗅”,接着又向前爬——汤姆说它是在打探。这条小虫自动爬近他身边时,他像一块石头一样凝然不动,满心希望它能爬得再近些。那条小虫一会儿继续向他爬过来,一会儿又好像改变了主意,打算往别处去。他的希望也随之一会儿高涨,一会儿低落。后来,小虫在空中翘起身子,考虑良久,终于爬到汤姆腿上来,在他身上周游,于是他心里充满了欢乐——因为这就表示他将要得到一套新打扮——毫无疑问,是一套光彩夺目的海盗制服。这时,不知道从什么地方来了一大群蚂蚁,正忙着搬运东西;其中一只正用两条前肢抓住一只有自己身体五倍大的死蜘蛛,奋力往前拖,直拖着它爬上了树干。一只背上有棕色斑点的花大姐趴在一片草叶的叶尖,汤姆俯下身子,对它说:“花大姐,花大姐,快回家,你的家里着火啦,你的娃娃找妈妈。”于是它就拍着翅儿飞走了,回家去看到底怎么了——汤姆对此一点也不感到奇怪,因为他早就知道这种小虫子容易相信火灾的事情,头脑又简单,被捉弄过不止一次了。不久,又有一只金龟子飞过来,不屈不挠地在搬一个粪球;汤姆碰了一下这小东西,看它把腿缩进身体装死。这时很多鸟儿叽叽喳喳闹得更欢了。有一只猫鹊——一种北方的学舌鸟——在汤姆头顶上的一棵大树上落下来,模仿着它附近别的鸟儿的叫声,叫得欢天喜地。随后又有一只樫鸟尖叫着疾飞而下,像一团一闪而过的蓝色火焰,落到一根小树枝上,汤姆几乎一伸手就能够到它。它歪着脑袋,十分好奇地打量着这几位不速之客;还有一只灰色的松鼠和一只狐狸类的大东西匆匆跑来,一会儿坐着观察这几个孩子,一会儿又冲他们叫几声。这些野生动物也许以前从未见过人类,所以它们根本不知道该不该害怕。此时自然界的万物全都醒来,充满了活力。这儿那儿,一道道阳光如长矛一般从茂密的树叶中直刺下来,几只蝴蝶扇着翅膀,在翩翩起舞。

    汤姆弄醒了另外两个强盗,他们大叫一声,嘻嘻哈哈地跑开了;两分钟以后,他们就脱得赤条条的,跳进白沙滩上那片清澈透底的水里互相追逐,滚抱嬉戏。宽阔的河流对面,远远的地方,就是那个村庄,而他们并不想念。可能是一阵湍流也可能是一股上涨的潮水,冲走了他们的小木筏。他们却为此感到庆幸。因为没有了木筏,就像是烧毁了他们与文明世界间的桥梁,斩断了他们回返的念头。

    他们回到露营地时,神采奕奕,兴致勃勃,却也饥肠辘辘;不久他们把那篝火又拨旺了。哈克在附近发现了一眼清泉,孩子们就用阔大的橡树叶和胡桃树叶做成杯子,他们觉得这泉水有股子森林的清香,完全可以取代咖啡。乔正在切咸肉片做早餐,汤姆和哈克让他稍候片刻;他们来到河边,相中了一个僻静之处,垂下鱼钩,不长时间就有了收获。还没到让乔等得不耐烦的时候,他们就拿回来几条漂亮的石首鱼,一对鲈鱼和一条小鲶鱼——这些鱼足够一大家人饱餐一顿。他们把鱼和咸肉放到一块煮,结果让人惊讶的是:鱼的味道竟然这么鲜美。他们不知道淡水鱼越趁活烧吃,味道越鲜美;另外,他们也没有想到露天睡觉、户外运动、洗澡以及饥饿会使食欲大增。他们并不明白饥者口中尽佳肴的道理。

    吃罢早饭,他们就往树荫底下随便一倒,哈克抽了一袋烟;然后大家往树林里去,去探险。他们信步走去,一路跨朽木,涉杂林,穿过高大的树木林,这些大树披垂着一根根葡萄藤,好像王冠上垂下来的流苏。他们时不时地遇到一些幽僻的地方,地面长满青草,绽放着鲜花,宛如块块镶着宝石的绿色地毯。

    他们看到了很多令人欣喜的东西,不过并没有什么稀奇古怪的玩意儿。他们发现这个岛大约有三英里长,四分之一英里宽,离河岸最近的地方只有一条狭窄的水道相隔,不足二百码宽。他们差不多每个钟头就游上一次泳,所以等他们回到宿营地时,已过去了半个下午。他们饿坏了,顾不得停下来捉鱼来吃,对着冷火腿,就是一番狼吞虎咽,吃罢就躺到荫凉下说话。说着说着就断断续续了,终于他们止住了话头。周遭的寂静、森林中的肃穆以及孤独感,慢慢地对这几个孩子的情绪发生了作用。他们开始沉思默想。一种莫名的渴望渐渐爬上他们心头——那是越来越强烈的思乡情绪。连赤手大盗费恩都在缅怀他从前睡觉的台阶和那些大空桶。但是他们对这种软弱感到害臊,没有一个人有勇气把心事公诸于众。