网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
用普通光学显微镜观察植物细胞，不易观察到的结构是（）。
A
细胞壁
B
细胞膜
C
细胞质
D
细胞核
参考答案
参考解析
解析：
A项，细胞壁位于最外面，有保护和支持作用，易被观察到，不符合题意； B项，细胞膜是紧贴细胞壁的一层薄膜，在普通光学显微镜下不太容易观察到，能控制物质的进出，符合题意： C项，细胞质位于细胞核的外面和细胞膜的里面，具有流动性，易被观察到，不符合题意； D项，细胞核内有遗传物质，其中的染色体容易被碱性染料染成深色，易被观察到，不符合题意
更多 “单选题用普通光学显微镜观察植物细胞，不易观察到的结构是（）。A 细胞壁B 细胞膜C 细胞质D 细胞核” 相关考题
考题
单选题学习《桃花源记》后，教师引导学生总结学过的课文中的通假字。以下各句中不包含通假字的一项是（）。A
尊君在不（《陈太丘与友期》）B
谈笑有鸿儒，往来无白丁（《陋室铭》）C
日扳仲永环谒于邑人（《伤仲永》）D
便要还家，设酒杀鸡作食（《桃花源记》）
考题
单选题在美术教学活动中，教师对学生的评价语言非常重要，你认为合适的有哪些？（）A
“不错，你的作品很有特色！”B
“这幅作品的毛病太多了，赶紧改！”C
“画得很不错，如果再加上自己大胆的想象，将会更加出色！”D
“你的这件作品太缺乏想象力了！”
考题
单选题Some people are often surprised by what other people do. According to Berger, that is mainly because _____.A
some people are more emotional than othersB
some people are not aware of the fact that we will never completely know another personC
some people are sensitive enough to sense the change of other people’s attitudesD
some people choose to keep to themselves
考题
单选题由于美术学习具有可动手操作的特点，所以创作活动占有相当大的比重。为了便于学习，《义务教育美术课程标准（2011年版）》将创作活动再具体分为（）两个学习领域。A
“欣赏·评述”和“综合·探索”B
“设计·工艺”和“书法·篆刻”C
“造型·表现”和“设计·应用”D
“现代媒体艺术”和“绘画·雕塑”
考题
单选题学生在学习了《中国石拱桥》《桥之美》等文章后，对各式各样的桥的姿态、历史、文化内涵等方面有了很大的兴趣，教师抓住这个契机，设置了一堂有关桥的综合性学习课程。下列教学目标的设计中，不适合本课的是（ ）。A
全面了解桥，掌握桥的名称由来，领略丰富的桥文化B
掌握查找资料、引用资料的基本方法，学会注明索引资料的出处C
养成善于观察生活、思考生活的习惯，并能用简明的语言表述自己的观察D
培养自主学习、交流与合作的能力
考题
单选题在地球大气层外有大量的太空垃圾，在太阳活动期，地球大气会受太阳风的影响而扩张，使一些原本在大气层外绕地球飞行的太空垃圾被大气包围，从而开始向地面下落，大部分太空垃圾在落地前已经燃烧成灰烬，但体积较大的太空垃圾仍会落到地面上，对人类造成危害，太空垃圾下落的原因是（）。A
大气的扩张使垃圾受到的万有引力增大而导致下落B
太空垃圾在与大气摩擦燃烧过程中质量不断减小，进而导致下落C
太空垃圾的上表面受到的大气压力大于其下表面受到的大气压力，这种压力差将它推向地面D
太空垃圾在大气阻力作用下速度减小，运动所需的向心力将小于万有引力，垃圾做趋向圆心的运动，落向地面
考题
单选题某版教科书《大自然的语言》一课，有这样一段预习提示性文字：课文把无比丰富的物候现象比作“大自然的语言”。这段文字属于教科书的什么系统？（）A
练习系统B
知识系统C
助读系统D
范文系统
考题
单选题公元前5世纪，雅典军队统帅尼斯阿斯曾言：“男人就是城邦。”这里“城邦”的含义是指（）。A
公民构成的政治联合体B
少数贵族的寡头政治C
城墙、军队等物质因素D
拥有公民权的雅典男子
考题
问答题案例：阅读下列教学片段，回答问题。张老师是某初中一名信息技术的老师，他很受学生的欢迎，张老师说，他以前上课时，总是会让学生一步一步跟着他操作，但是后来他发现效果并不理想而且自己上课总是讲得口干舌燥。后来他上课都会先给出学生一个情景，然后举行一系列的竞赛，并且在竞赛过程中用“刺激”的话鼓励学生积极主动地参与学习，让他们通过每节课的任务实现学习目标，为了检测学习效果，张老师每节课结束前都会做一个小结.给学生布置一个小任务。问题： （1）张老师“刺激”的话对学生有什么作用？张老师的课前小结对学生有什么作用？ （2）请简要回答张老师在以前上课和现在上课分别采用的教学方法是什么？后面所采用的那种教学方法的优点是什么？
考题
单选题Passage1The medical world is gradually realizing that the quality of the environment in hospitals may play a significant role in the process of recovery from illness.As part of a nationwide effort in Britain to bring art out of the galleries and into public places，some of the country's most talented artists have been called in to transform older hospitals and to soften the hard edges of modern buildings. Of the 2，500 National Health Service hospitals in Britain，almost 100 now have significant collections of contemporary art in corridors，waiting areas and treatment rooms.These recent initiatives owe a great deal to one artist，Peter Senior，who set up his studio at a Manchester hospital in northeastern England during the early 1970s.He felt the artist had lost his place in modern society，and that art should be enjoyed by a wider audience.A typical hospital waiting room might have as many as 500 visitors each week. What better place to hold regular exhibitions of art？Senior held the first exhibition of his own paintings in the out-patients waiting area of the Manchester Royal Hospital in 1975.Believed to be Britain's first hospital artist, Senior was so much in demand that he was soon joined by a team of six young art school graduates.The effect is striking. Now in the corridors and waiting rooms the visitor experiences a full view of fresh colors, playful images and restful courtyards.The quality of the environment may reduce the need for expensive drugs when a patient is recovering from an illness. A study has shown that patients who had a view onto a garden needed half the number of strong pain killers compared with patients who had no view at all or only a brick wall to look at.The fact that six young art school graduates joined Peter shows that_______.A
Peter's enterprise is developing greatlyB
Peter Senior enjoys great popularityC
they are talented hospital artistsD
the role of hospital environment is being recognized
考题
问答题依据《义务教育音乐课程标准（2011年版）》的理念，按照下列要求进行教学设计。教学对象：八年级教学内容：欣赏教学《梁祝》要求：（1）设定目标。（2）确定教学重、难点。（3）针对教学目标与难点，设定具体的教学目标和过程。
考题
单选题（）是音乐课人文学科属性的集中体现，促进学生对音乐的体验与感受，提高学生音乐欣赏、表现、创造以及艺术审美能力。A
音乐与相关文化B
音乐与艺术审美C
德育与艺术审美D
探究与合作
考题
问答题阅读下面学生的习作，完成问题。咀嚼生活的真味①咀嚼生活的真味有一种力量，无所不能；有一种营养，人人需要，这就是爱。爱是生活的真味，用爱导航人生，将亮丽一生。②有这么一家人，都不是“左撇子”，习惯于右手使筷子吃饭。谁知儿子出生不久就被宣布为右臂残疾，现已三岁。为了小孩子能够不感到自己的缺陷，适应用自己唯一的左手生活，一家人毅然决然地改弦更章，用左手吃饭，并坚持了下来。这是用爱养成的习惯，我们有理由相信这家人找到了生活的真味，孩子在这个家庭里生活是很幸运的。③记得上周六去舅舅家玩，傍晚时舅舅开车送我回家。舅舅车开得很快，钻小巷子也不减速，这是他的开车风格。车子又拐进一个胡同，走着走着，车却突然慢了下来。我发现车速慢得不及人的步行，已有几个人从我们车的两边走过去了，显然把我们的车丢在了后面。一向开车如飞的舅舅怎么这时的车却像蜗牛般蠕动了？正想开口问舅舅，他示意我仔细往前看，原来车子的前面，有一位拄着拐杖的老人，正在蹒跚前行。显然耳背的老人，并没有留意身后的动静，他一直按照自己的节奏，缓缓举步，悠然自得。④小巷不宽，但是找个空当，车子还是可以擦身而过的。或许是怕惊扰了老人的悠然，舅舅的车子即没有鸣喇叭，也没有超道，如同老人的影子，随着他的节奏，亦步亦趋地跟在后面，无声无息。我心中顿时感到暖暖地，向舅舅竖起了大拇指。数分钟后，老人拐进了一条岔巷，走了。于是，这车一提速，忽的一下，向前驰去，舅舅又恢复了自己的开车风格。这与爱同行的感觉真好，让我再次咀嚼到了生活的真味。⑤事实上，能让我们尝到生活真味的事情还有很多很多。可以说在我们身边触手可及的“最美”的身影从未消失过，爱的接力比比皆是。去年7月，“最美妈妈”吴菊萍徒手接住从10楼掉下的2岁女孩；一个月前，“最美老师”张丽莉用自己的双腿保住了学生免遭车轮碾压；6月3日，“最美路人”“托举哥”周冲爬上防盗网，用双手托住卡在4楼阳台花架上的小女孩；6月8日，“最美孕妇”彭伟平，身怀6个月大的双胞胎仍旧勇敢跳进深水中抢救落水儿童……⑥这些爱的举动无不绽放出缕缕的光芒，让我们对生活越来越有信心，甜美的生活属于你，我，他。1．在第②④段中找出两个错别字，在第③段中找出一个病句，并加以修改。2．指出该习作的优缺点，并结合具体内容进行评析。
考题
单选题请阅读 Passage 1，完成第21~25小题 。Passage 1As regards social conventions，we must say a word about the well-known English class system. This is an embarrassing subject for English people，and one they tend to be ashamed of ，though during the present century class-consciousness has grown less and less，and the class system less rigid.But it still exists below the surface.Broadly speaking，it means there are two classes，the "middle class" and the"working class". (We shallignore for a moment the old "upper class"，including the hereditary aristocracy，since it is extremely small in numbers; but some of its members have the right to sit in the House of Lords，and some newspapers take surprising interest in their private life.) The middle class consists chiefly of well-to-do businessmen and prof essional people of all kinds.The working class consists chiefly of manual and unskilled workers.The most obvious difference between them is in their accent.Middle-class people use slightly varying kinds of "received pronunciation" which is the kind of English spoken by BBC announcers and taught to overseas pupils.Typical working-class people speak in many different local accents which are generally felt to be rather ugly and uneducated.One of the biggest barriers of social equality in England is the two-class education system.To have been to a so-called "public school" immediately marks you out as one of the middle class.The middle classes tend to live a more formal life than working-class people，and are usually more cultured.Their midday meal is"lunch" and they have a rather formal evening meal called"dinner"，whereas the working man's dinner，if his working hours permit，is at midday，and his smaller，late-evening meal is called supper.As we have said，however，the class system is much less rigid than it was，and for a long time it has been government policy to reduce class distinctions.Working-class students very commonly receive a university education and enter the professions，and working-class incomes have grown so much recently that the distinctions between the two classes are becoming less and less clear. However，regardless of one's social status，certain standards of politeness are expected of everybody，and a well-bred person is polite to everyone he meets，and treats a laborer with the same respect he gives an important businessman.Servility inspires both embarrassment and dislike.Even the word "sir"，except in school and in certain occupations (e.g.commerce，the army，etc.) sounds too servile to be commonly used.Why isn't the word "sir" commonly used in Britain?A
Because it sounds too servile and is likely to cause embarrassment.B
Because it can only be used in some certain occupations.C
Because it is an impolite word.D
Because it shows that the speaker is not well-bred person.
考题
单选题____ aims to help students to pay attention to teaching content efficiently at the beginning of the class.A
Lead-inB
PresentationC
PreparationD
Practice
考题
单选题布莱德雷曾说：“（日本）这个曾是敌国的国家，对我国来说不仅是太平洋上最强大的堡垒，而且作为太平洋战争胜利的果实，是留在我们手中唯一有价值的地方。”“二战”后日本的“价值”主要体现在( )。A
成为美国的最大商品市场B
成为遏制苏联、中国的前哨C
为美国提供廉价劳动力D
提供反面教材，警示世人
热门标签
最新试卷
