“Mum, what does it mean when someone tells you that they have a skeleton(骨骼) in the closet?” Jessica asked. “A skeleton in the closet?” her mother paused thoughtfully. “Well, it's something that you would rather not have anyone else know about. For example, if in the past, someone in Dad's family had been arrested for stealing a horse, it would be 'a skeleton in his family's closet'. He really wouldn't want any neighbor to know about it.”

    “Why pick on my family?” Jessica's father said with anger. “Your family history isn't so good. you know. Wasn't your great-great-grandfather a prisoner who was transported to Australia for his crimes?” “Yes, but people these days say that you are not a real Australian unless your ancestors arrived as prisoners .” “Gosh, sorry I asked, I think I understand now,” Jessica cut in before things grew worse.

    After dinner, the house was very quiet. Jessica's parents were still quite angry with each other. Her mother was ironing clothes and every now and then she glared at her husband, who hid behind his newspaper pretending to read. When she finished, she gathered the freshly pressed clothes in her arms and walked to Jessica's closet. Just as she opened the door and reached in to hang a skirt, a bony arm stuck out from the dark depths and a bundle of white bones fell to the floor. Jessica's mother sank into a faint(晕倒), waking only when Jessica put a cold, wet cloth on her forehead.  She looked up to see the worried faces of her husband and daughter.

    “What happened？Where am I?” she asked. “You just destroyed the school's skeleton, Mum,” explained Jessica. “I brought it home to help me with my health project, I meant to tell you, but it seemed that as soon as I mentioned skeletons and closets, it caused a problem between you and Dad.” Jessica looked in amazement as her parents began to laugh madly. “they're both crazy,” she thought.

要使视野中单个细胞最大，你认为应选用的显微镜镜头组合是（　　）

阅读下文，回答相关问题。

                                                                                               谁能润泽我们的生命
                                                                                                          尤今
         ①书对我而言，犹如空气。它无处不在，无时不有，而我，时时刻刻都需要它。
         ②自童年开始，我便明白，肚子饿了，找食物吃；眼睛饿了，找书看。我的双眸，时时都处在饥饿的状态中，只要一书在手，我便如蚁附膻，既有“蚕吞桑叶”的快乐，亦有“蜂儿采蜜”的满足。
        ③略识之无，我便发现，屋子里的每一寸空隙，都漂浮着一缕一缕的书香。视线所及之处，有书；视线不及之处，亦有书。高高低低地叠着、密密麻麻地堆着；疏疏地散放着、齐齐地排列着。书和屋子，你依我依地化成了一个圆满的整体。在那如饥似渴地从书籍汲取营养的童稚时代，我们的物质生活是捉襟见肘的。书却为我营造了一个金光灿烂的世界。
       ④父亲总是买书，不是一册册地买、而是一摞摞地买，当他把书提进门时，忙家务的母亲总是很快地把湿漉漉的手抹干了，把那一摞书当成瑰宝一样，小心翼翼地捧过来，欢天喜地地拆看。
       ⑤万籁俱寂时，母亲在荧荧灯火下执卷而读的样子，真是美丽。微鬈的睫毛静静地在眸子下方印着扇形的影子，脸上浮着一抹蜻蜓点水式的、若有若无的笑意。
       ⑥她低头看书。我仰头看她。她快乐地沉浸在文字那个神秘莫测的世界里，而我，向往那个世界。于是，跌跌撞撞地闯了进去。最初，一知半解，等一进入情况，便痴痴地迷上了，书，自此成了生命中不可分割的一部分。
       ⑦成家之后，整间屋子氤氤氲氲都是书香。我站着读、坐着读，躺着也读。我读书的时候，孩子也人手一册地读。一家大小静静地、齐齐地读书的那种感觉，美好到了极致，幸福到了极点。
        ⑧站在浩如烟海的书籍中，突然想起青少年时代的一件往事。那时，零用钱有限，想买书，只能将钱一点一滴地储存起来，存够了，才得以一偿夙愿，那一回，看中了赛珍珠的译著《大地》，翻来覆去地看，爱不释手，可是，没有钱买。一连两三周，上书局时，总先去看看那部小说还在不在，如果还在，便抽出来，用手轻轻摩挲一番，才恋恋不舍地放回去。后来，学校考试，忙着温习功课，没上书店。考完试后，钱也储够了，便风风火火地赶往书店。可是，那部朝思暮想的书没了。我觉得心里有一种说不清的疼痛，在书架旁晃来晃去，像个无主孤魂。
       ⑨阅读，是一种多功能的活动，也是一种潜移默化的浸润活动。许多散文和小说，都不着痕迹地蕴藏着隽永可贵的价值观与人生观，它会在阅读的过程中，慢慢地流入读者的内心深处，那种影响力，是巨大而深远的。台湾漫画家蔡志忠说过：“要成为出色的漫画家，非得喜欢读书不可。画只是技巧，出色的漫画，出自无穷的想象。不读书，就表示没有好奇心，怎么可能画出精彩的漫画？”
        ⑩实际上，阅读所能带来的脑力冲击，大得超乎想象。它足以将水面上的一个小涟漪化为滔天巨浪，从而创造出一个个奇迹。
        ⑾阅读带来的大快乐，是任何其他的活动都难以相比的。当它让你哭时，那种感动，能够进入心坎很深的地方；当它让你笑时，那种快乐，像是融化在心上的一块糖。它时而像铁锹，在你心叶上挖出一个个痛楚的窟窿；时而像辣椒，辣得你汗如雨下却又拍案叫绝。有时，它像雷像电，狠狠地劈下来，将迷糊混沌的你震醒；有时，它又像云像雾，让你腾云驾雾、浑然忘却世间的一切烦恼。
        ⑿我觉得自己最大的“成就”是：以书为种子，在孩子的心田里种下了一株快乐的树。这树，永不枯萎。                                    （本文原题为《书》）