题干

如图所示,DE为△ABC的中位线,点F在DE上,且∠AFB=90°,若AB=5,BC=8,则EF的长为____

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同类题1

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    "The first of June, and the King family is going on holiday tomorrow! " said Meg. "I'm free for three months!"

    "And Aunt March went away for her holiday today." said Jo. "Isn't life wonderful!"

    "What will you do all your holiday?" asked Amy.

    "I'll stay in bed late, and do nothing." said Meg.

    "I have lots of books to read." said Jo.

    "Let's not do any studying, Beth...." said Amy. "Let's play all the time and rest, as Jo and Meg are going to do."

    "I will if Mother doesn't mind." said Beth.

    Mrs. March agreed to the plan and said they could try it for a week.

   "But," she added, "I think by Saturday night you will find that all play and no work is as bad as all work and no play."

    Next day, Meg appeared at ten o'clock and ate breakfast alone. It was a lonely meal and the room was untidy, because Beth had not cleaned it.

    Jo went to the river with Laurie, then sat in the apple tree and read a book. Beth began to tidy things in her cupboard, but she got tired and left it half-done. She went to her piano, glad that she did not have to wash the cups and plates. Amy sat in the garden to draw, hoping someone would see her and say something nice about her picture. But no one appeared, so she went for a walk, got caught in the rain and came home very wet.

    At tea, everyone said that it had been a happy but unusually long day. Meg, who had been shopping in the afternoon, now decided that she did not like the dress she had bought. Jo had a headache from reading too long. Beth couldn't find anything in her cupboard, and the rain had made Amy's dress so wet that she couldn't wear it to Katy Brown's party the next day.

    Mrs. March listened, smiled and said nothing.

    The week seemed to get longer and longer with nothing much to do, and by Friday the girls were glad that it was nearly over. Then Mrs. March gave Hannah a holiday, and when the girls got up on Saturday, there was no breakfast ready, no fire in the kitchen, and no mother waiting for them.

    "What has happened?" said Jo.

    Meg ran upstairs, then came down to say that Mother was staying in her room to have a rest.

    "She says we must look after ourselves today." Meg said.

    "Good, I want something to do." said Jo.

    Secretly, they were all pleased to have something useful to do again. Beth and Amy put cups and plates on the table while Jo and Meg got the breakfast, then Meg took some tea and an egg up to Mrs. March. The tea was too strong and the egg was burned. Mrs. March did not complain, but she laughed to herself afterwards.

同类题4

阅读下文,回答问题

乌镇的时光

岑亚芳

    关于旅行的去处,我一直偏好古镇,仿佛总有些割舍不掉的心绪,觉得那里还生活着原先,还能看得到旧时的月色,还有一些被称作回忆的东西。

    去乌镇是几个月前的事了。到西柵的时候临近傍晚,阳光穿过深深的巷子,落在廊桥上,长青藤的叶子像玉石般晶莹剔透,时间仿佛在这一刻静止下来,我惊艳于逆光下这唯美的景象。居然忘了要拿背包里的相机。

    预订的民宿临水而筑,我的那间还有个小小的阳台,两把藤椅,一张小几、放着青花瓷茶具,倒也清雅别致。简单整理了下,摄友们便各自出发寻找美景去了。相较于一大群人聚集在一处猛拍出来的照片千篇一律,我倒是更喜欢这种方式。每个人心中都有一个不一样的乌镇,表现手法也各不相同。而我,更愿意闲散地四处走走,感受小镇特有的韵味。

    西栅果然有一种与众不同的美,这种美是大气的,沉稳的,朴素的。在这里,找不到一处西塘那样灯红酒绿的颜色,就是路灯,也是最简朴的灰白色调。青藤从斑驳的墙面垂下来,谁家的屋沿下,还挂着开满小花的盆栽?凹凸的青石板路蜿蜒而前,路面却非常干净,干净得好像我不是走在旅游景点中,而是在穿越一段长长的旧日时光,思绪很容易就陷入飘渺中去了。

    西栅是个充满诗情画意的地方。这里的小巷,石桥,河道,青瓦白墙.雕花木门,还有廊桥下长长的美人靠不知不觉,就会把你的脚步带入深远的记忆。沿街也有不少的商铺,从吃的到用的都齐全,却绝没有嘈杂的喧嚣。你可以进去看,没有人向你兜售什么,仿佛它的存在就是一种展示,喜欢,可以带走;不喜欢,它还在那里,静静地封存着一段不为人知的岁月。街上有个乌镇邮局,青砖外墙,乌漆墨黑的邮筒。走到这里,时光一下子倒退了百十年,脑海中突然闪现这样的画面:藕色的斜襟上衣、黛蓝的长裙,女孩撑着油纸伞,抿嘴轻笑……呵!那一个,丁香一样结着愁怨的姑娘!她翻起人们多少美好的遐想!我特别喜欢那些小小的书店和里面挂着的照片。照片都是当地的摄影师拍的。乌镇的春夏秋冬、暮色晨景,每一帧都是极美的画卷。聪明的人们把它们制成明信片发行,填好地址马上可以寄出去。我挑了几张,却没有邮寄。营业员帮我简单包装了下。素色的纸上印着他们的LOGO—“当年”,不经意间心又被轻轻地拨动了。

    就这样边走边摄,看两岸枕河人家,人们三五成群坐在窗前品茶喝酒,怡然自得。不断有桨声划过水面,摇碎了老屋和桥的影子。晚风吹来,空气里分明带着清新的自由和欢快。

    这样的时光很容易过去,等发现肚饿的时候,已是七点多了。民宿的饭菜都需要预约,也再没有空的桌子可以腾出来给我们了。结果,几个人只好走进一家茶楼,在月光和蕉叶下静静地享用了晚餐。

    夜深了,大部分游人已散去,我们又去拍了几张夜景.月色朦胧,灯光朦胧,露天电影已经散场。

    第二天坐船出来时,摄友们讨论此次拍摄的过程。我拿出包里的明信片给他们看。都说,这样的片子其实我们也可以拍出,只是,作者生活在这里, 一草一木再熟悉不过;而我们之于她,只是红尘中一行色匆匆的过客…

    是的, 也许那个晚上我们错过了最佳的摄影时间,也错过了一场可能非常好看的露天电影,好在并没有错过第二天的晨曦。当阳光笼着枕水人家、古拙的石桥、轻轻摇过的乌篷船,那种宁静、恬淡、惬意悄悄温润了身上每一个细胞。

    现在回想起来,仍然觉得在乌镇的时光非常美好。

(选自《散文百家》2015年第3期)