阅读下面短文，掌握其大意，然后从各小题所给的四个选项中选出最佳选项。

    One thorn(刺) of experience is worth many times of warning.

    Ralph Wick was seven years old. In most things he was a fine boy, but he would cry from time to time. When he could not have what he wanted, he would 1for it. If he was told that it would hurt him, and he could not 2 it, he would also cry.

    One day, he went with his mother into the 3. The sun shone. The grass was cut. The flowers were starting to come out.

    Ralph thought he was, for once, a good boy. A 4 was on his face. He wished to do as he was told. Ralph helped his mother with the farm work and he was very happy.

    “Now you must be tired and 5,” said his mother. “Have a good rest here and eat some cookies. I will get a beautiful red rose for you.” So his mother brought the red flower to him. When he saw his mother still had a white rose in her hand, Ralph 6 it.

    “No, my dear.” said his mother. “See how many thorns it has. You must not touch it, or you would be sure to hurt your 7.” When Ralph found that he could not have the white rose, he began to cry, and 8 took it away. But he was soon very sorry. The thorns hurt his hand. It was so 9 that he could not use it for some time.

    Ralph would never 10 this. From then on, when he wanted what he should not have, his mother would point to his hand which had been hurt before. He at last learned to do as he was told.

阅读下面的文言文，完成下列各题。

梅圣俞墓志铭

欧阳修

    嘉祜五年，京师大疫。四月乙亥，圣俞得疾，卧城东汴阳坊。明日，朝之贤士大夫往问疾者，属路不绝。城东之人，市者废，行者不得往来，咸惊顾相语曰：“兹坊所居大人谁耶？何致客之多也!”居八日，癸未，圣俞卒。于是贤士大夫又走吊哭如前日益多。而其尤亲且旧者相与聚而谋其后事，自丞相以下皆有以赙①恤其家。六月甲申，其孤增载其柩南归，以明年正月丁丑，葬于宣州阳城镇双归山。

    圣俞，字也，其名尧臣，姓梅氏，宣州宣城人也。其家世颇能诗，而从父询”以仕显，至圣俞遂以诗闻。自武夫、贵戚、童儿、野叟，皆能道其名字，虽妄愚人不能知诗义者，直曰此世所贵也，吾能得之，用以自矜。故求者日踵门，而圣俞诗遂行天下。其初喜为清丽闲肆平淡，久则涵演深远，间亦琢刻以出怪窍，然气完力余，益老以劲。其应于人者多，故辞非一体，至于他文章皆可喜，非如唐诸子号诗人者僻固而狭陋也。

    圣俞为人仁厚乐易，未尝忤于物。至其穷愁感愤，有所骂讥笑谑，一发于诗。然用以为欢，而不怨怼，可谓君子者也。初在河南，王丈康公见其文，叹曰：“二百年无此作矣。”其后大臣屡荐宜在馆阁，尝一召试，赐进士出身，余辄不报。嘉祜元年，翰林学士赵概等十余人言于朝曰：梅某经行修明，愿得留与国子诸生讲论道德，作为雅颂，以歌咏圣化。乃得国子监直讲。圣俞初以从父荫补太庙斋郎，历桐城、河南、河阳三县主簿，以德兴县令知建德县，又知襄城县，监湖州盐税，签署忠武、镇安两军节度判官，监永济仓，国子监直讲，累官至尚书都官员外郎。尝奏其所撰《唐载》二十六卷，多补正旧史阙缪。乃命编修《唐书》，书成，未奏而卒，享年五十有九。

    圣俞学长于《毛氏诗》，为《小传》二十卷，其文集四十卷，注《孙子》十三篇。余尝论其诗曰：“世谓诗人少达而多穷，盖非诗能穷人，殆穷者而后工也。”圣俞以为知言。

(选自《毗陵横山梅氏宗谱》，有删节)

【注】①膊：送布帛财物助人办丧事．②询：梅询，梅圣俞的堂叔．

已知有耳垂和无耳垂是一对相对性状，分别由D和d控制．一对夫妇的基因都是Dd，那么，他们子女的基因可能是（    ）