阅读下面的文字，完成小题。锄
李锐
    拄着锄把出村的时候又有人问：“六安爷，又去百亩园呀？”
    倒拿着锄头的六安爷平静地笑笑：“是哩。”
    “咳呀，六安爷，后晌天气这么热，眼睛又不方便，快回家歇歇吧六安爷！”
    六安爷还是平静地笑笑：“我不是锄地，我是过瘾。”
    “咳呀，锄了地，受了累，又没有收成，你是图啥呀你六安爷？”
    六安爷已经记不清这样的回答重复过多少次了．他还是不紧不慢地笑笑：“我不是锄地，我是过瘾。” 斜射的阳光明晃晃地照在六安爷的脸上，渐渐失明的眼睛，给他带来一种说不出的静穆。六安爷看不清人们的脸色，可他听得清人们的腔调。但是六安爷不想改变自己的主意，照样拄着锄把当拐棍，从从容容地走过。
    百亩园就在河对面，一抬眼就能看见。一座三孔石桥跨过乱流河，把百亩园和村子连在一起。这整整一百二十亩平坦肥沃的河滩地．是乱流河一百多里河谷当中最大最肥的一块地。西湾村人不知道在这块地上耕种了几千年几百代了。几千年几百代里，西湾村人不知把几千斤几万斤的汗水撒在百亩园．也不知从百亩园的土地上收获了几百万几千万斤的粮食，更不知这几百万几千万斤的粮食养活了世世代代多少人。但是，从今年起百亩园再也不会收获庄稼了。煤炭公司看中了百亩园，要在这块地上建一个焦炭厂。两年里反复地谈判，煤炭公司一直把土地收购价压在每亩五千块。为了表示绝不接受的决心，今年下种的季节，西湾村人坚决地把庄稼照样种了下去。煤炭公司终于妥协了，每亩地一万五千块。这场惊心动魄的谈判像传奇一样在乱流河两岸到处被人传颂。一万五千块，简直就是一个让人头晕的天价。按照最好的年景，现在一亩地一年也就能收入一百多块钱。想一想就让人头晕，你得受一百多年的辛苦，留一百多年的汗，才能在一亩地里刨出来一万五千块钱呐！胜利的喜悦中，没有人再去百亩园了，因为合同一签，钱一拿，推土机马上就要开进来了。
    可是，不知不觉中，那些被人遗忘了的种子，还是和千百年来一样破土而出了。每天早上嫩绿的叶子上都会有珍珠一样的露水，在晨风中把阳光变幻得五彩缤纷。这些种子们不知道，永远不会再有人来伺候它们，收获它们了。从此往后，百亩园里将是炉火熊熊，浓烟滚滚的另一番景象。
    六安爷舍不得那些种子，他掐着指头计算着出苗的时间，到了该间苗锄头遍的日子，六安爷就拄着锄头来到百亩园。一天三晌，一晌不落。
    现在，劳累了一天的六安爷已经感觉到腰背的酸痛，满是老茧的手也有些僵硬。他蹲下身子摸索着探出一块空地，然后，坐在黄土上很享受地慢慢吸一支烟，等着僵硬了的筋骨舒缓下来。等到歇够了，就再拄着锄把站起来，青筋暴突的臂膀，把锄头一次又一次稳稳地探进摇摆的苗垅里去。没有人催，自己心里也不急，六安爷只想一个人慢慢地锄地，就好像一个人对着一壶老酒细斟慢饮。
    终于，西山的阴影落进了河谷，被太阳晒了一天的六安爷，立刻感觉到了肩背上升起的一丝凉意。他缓缓地直起腰来，把捏锄把的两只手一先一后举到嘴前，轻轻地啐上几点唾沫，而后，又深深地埋下腰，举起了锄头。随着臂膀有力的拉拽，锋利的锄刃闷在黄土里咯嘣咯嘣地割断了草根，间开了密集的幼苗，新鲜的黄土一股一股地翻起来。六安爷惬意地微笑着，虽然看不清，可是，耳朵里的声音，鼻子里的气味，河谷里渐起的凉意，都让他顺心，都让他舒服。银亮的锄板鱼儿戏水一般地，在禾苗的绿波中上下翻飞。于是，松软新鲜的黄土上留下两行长长的跨距整齐的脚印，脚印的两旁是株距均匀的玉茭和青豆的幼苗，六安爷种了一辈子庄稼，锄了一辈子地，眼下这一次有些不一般，六安爷心里知道，这是他这辈子最后一次锄地了，最后一次给百亩园的庄稼锄地了。
    沉静的暮色中，百亩园显得寂寥、空旷。六安爷喜欢这天地间昏暗的时辰，眼睛里边和眼睛外边的世界是一样的。他知道自己正慢慢融入眼前这黑暗的世界里。
    很多天以后，人们跟着推土机来到百亩园，无比惊讶地发现，六安爷锄过的苗垅里，茁壮的禾苗均匀整齐，一棵一棵蓬勃的庄稼全都充满了丰收的信心。没有人能相信那是一个半瞎子锄过的地。于是人们想起六安爷说了无数遍的话，六安爷总是平静固执地说，“我不是锄地，我是过瘾。”
（有删改）

先化简，再求值：$\frac{1}{a+1}$﹣$\frac{a}{(a+1{)}^2}$，其中a=$\sqrt{2}$﹣1．

The hospital has a new system to help ____（提供）the best service for the patients.

阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项。

    Is your TV connected to the Internet? What about your chair, or your fridge? Probably they are not. But in the future, most things in your home may be connected, thanks to the so-called "Internet of things".

    The Internet of things may be coming sooner than you think. Earlier this year, Samsung CEO spent a lot of time talking about the Internet things. He said that three years from now, every Samsung product will be part of the Internet of things, no matter whether it's a remote control or a washing machine.

    So, how do household objects that are part of the Internet of things work? Well, think of a common chair. When connected to the Internet, the chair warms up when it knows the user has just walked into the room and is feeling cold.

    An Internet-connected camera could help people feel safer in their homes. It can know people's faces and has an infrared sensor（红外传感器）, so even if it's dark it can see when someone passes by and send you a message on your smart-phone to let you know who's there. If the person is someone you don't know, it can tell you that, too.

    But according to MIT Technology Review, whether companies are connecting dog food bowls or safety systems to the Internet, there may be some problems. For example, many early connected-home objects don't have much built-in security, which means they could be hacked（攻击）. Moreover, it could be difficult to get these new machines to work together especially when they are made by different companies. To fight this, many companies have joined the Open Interconnect Consortium, which had 45 members by late 2015.

    So, picture this: you enter your home. The temperature changes to make you feel comfortable. Your favorite music starts playing for you. Do you think that this would be a good thing? It may happen sooner than you think.

补全对话

从方框中选择最佳选项完成对话，有两项多余

a. Yes!

b. The keys? They're on the table.

c. No, they aren't.

d. How about my books?

e. It's under the desk.

f. Where are they?

g. Thank you very much.

A: Hi, Susan! My keys（钥匙） are lost（丢失）. ____

B: Are they on the table?

A:____

B: En. . . Are they in your bag?

A: But where is my bag?

B:____

A:____They are here. But there aren't any books in my bag.

B: Ha- ha. Are they lost, too?

A: Oh, no.

B: Look! They are on the shelf (架子).

A:____

B: Not at all.