It is + adj. (for/of sb.) to do sth. 句型
1.形容词说的是“人”：It is + adj.+of sb.+ (not) to do
of sb的句型一般用表示人物的性格，品德，表示主观感情或态度的形容词，如good, kind, nice, clever, foolish, right。
It's very nice of you to help me. 你来帮助我，你真是太好了。
2.形容词说的是“事物”It is + adj.+for sb.+ (not) to do
for sb. 常用于表示事物的特征特点，表示客观形式的形容词，如easy, hard, difficult, interesting, important, impossible等
It's very hard for him to study two languages. 对他来说学两门外语是很难的。
选择题
( ) 1.It’s clever ___ you ___ so many toy ships.
A. of; making
B. of; to make
C. for; to make
D. for; making ( ) 2.It’s ___ for us ___ polite in class.
A. interesting, to become, to
C. important, to
D. necessary, to be
( ) 3.___ careless of you to make lots of mistakes.
A. That’s
B. It’s
C. It
D. Its
( ) 4.It’s very nic e ___ you to get me two tickets ____ the World Cup.
;of;for C. to;for D. of; to
( ) 5.---I often have hamburgers for lunch.
---You’d better not. It’s bad for you _____too much junk
food.
eat D. ate
( ) 6.It’s good for us ______ every day.
A. play
B. playing sports
sports
C. to play sports
D. to playing sports
考研英语写作议论文常见话题经典句型示例 1. When asked about..., most people say... But many other people regard...as... I personally think... 当被问及对......有什么看法时，大多数人认为......但是，还有很多人认为......我个人认为...... 2. When it comes to..., some people think that... Others argue that the opposite is true. There is probably some truth to both arguments, but... 涉及......这一问题，有的人认为应该......另一些人持相反意见。也许双方的观点都有一定道理，但是...... 3. It is widely acknowledged that...contributed to... Experts argue that China must introduce... But I doubt whether...alone will solve the problem。 人们普遍认为......专家认为中国必须推行......但我对仅仅......就能解决问题表示怀疑。 4. An increasing number of people are joining... In reaction to the phenomenon, some say... But do they realize that...can also lead to... 越来越多的人......进入了......针对这一现象，一些人认为......但是，他们有没有意识到......也能导致...... 5. One of the pressing problem facing our nation (China) today is...and... 我们国家(中国)如今面临的紧迫问题之一是...... 6. Perhaps the most dangerous phenomenon gripping the nation today is... 也许当今困扰国家的最危险的现象是...... 7. Never before in history has the issue of...been more evident than now。 历，......的问题从来没有比现在更加突出。 8. Perhaps it is time to reexamine the idea that... 也许现在是应该重新考虑......的时候了。 9. A growing number of people are beginning to realize that...is not the sole prerequisite for happiness。
英语议论文写作常用句型中英文对照模版 （一）段首句 1. 关于……人们有不同的观点。一些人认为…… There are different opinions among people as to ____ .Some people suggest that ____. 2.俗话说（常言道）……，它是我们前辈的经历，但是，即使在今天，它在许多场合仍然适用。There is an old saying______. It’s the experience of our forefathers，however，it is correct in many cases even today. 3.现在，……，它们给我们的日常生活带来了许多危害。首先，……；其次，……。更为糟糕的是…… 。 Today, ____, which have brought a lot of harms in our daily life. First, ____ Second,____. What makes things worse is that______. 4.现在，……很普遍，许多人喜欢……，因为……，另外（而且）……。 Nowadays, it is common to ______. Many people like ______ because ______.Besides，______. 5.任何事物都是有两面性，……也不例外。它既有有利的一面，也有不利的一面。 Everything has two sides and ______ is not an exception，it has both advantages and disadvantages. 6.关于……人们的观点各不相同，一些人认为（说）……，在他们看来，…… People's opinions about ______ vary from person to person. Some people say that ______.To them,_____. 7.人类正面临着一个严重的问题……，这个问题变得越来越严重。 Man is now facing a big problem ______ which is becoming more and more serious. 8.……已成为人的关注的热门话题，特别是在年青人当中，将引发激烈的辩论。 ______ has become a hot topic among people，especially among the young and heated debates are right on their way. 9.……在我们的日常生活中起着越来越重要的作用，它给我们带来了许多好处，但同时也引发一些严重 的问题。 ______ has been playing an increasingly important role in our day-to-day life. It has
条件分析 1甲、乙两队进行象棋对抗赛，甲队的三人是张、王、李，乙队的三人是赵、钱、孙。按照以往的比赛成绩看，张能胜钱，钱能胜李，李能胜孙，但是第一轮比赛他们都没有成为对手。第一轮比赛的对手分别是谁对谁？ 2A， B， C， D四名学生猜测自己的数学成绩。 A说:“如果我得优，那么B也得优。” B说:“如果我得优，那么C也得优。” C说:“如果我得优，那么D也得优。” 结果大家都没说错，但是只有两个人得优。谁得了优？ 3某校五年级三个班举行乒乓球混合双打表演，每班男女生各出一名，男生是甲、乙、丙，女生是A，B，C。规定:同班的男女生不能配对。已知: 第一盘:甲和A对丙和B； 第二盘:丙和C对甲乙的同班女生。 问:甲的同班女生是谁？ 4有三对夫妇在一次聚会上相遇，他们是X，Y，Z先生和A，B，C女士，其中X先生的夫人和C女士的丈夫是初次见面，B女士的丈夫和A女士也是初次见面，Z先生认识所有的人。问:哪位先生和哪位女士是夫妇？ 5甲、乙、丙三位老师分别上语文、数学、外语课。 (1)甲上课全用汉语； (2)外语老师是一个学生的哥哥； (3)丙是一位女教师，她比数学老师活泼。 问:三位老师各上什么课？ 6刘刚、马辉、李强三个男孩各有一个妹妹，六个人进行乒乓球混合双打比赛。事先规定:兄妹二人不许搭伴。 第一盘:刘刚和小丽对李强和小英；
第二盘:李强和小红对刘刚和马辉的妹妹。 问:三个男孩的妹妹分别是谁？ 7徐、王、陈、赵四位师傅分别是工厂的木工、车工、电工和钳工，他们都是象棋迷。 (1)木工只和车工下棋，而且总是输给车工； (2)王、陈两位师傅是邻居； (3)陈师傅与电工下棋互有胜负； (4)徐师傅比赵师傅下的好； (5)木工的家离工厂最远。 问:徐、王、陈、赵四位师傅各是什么工种？ 8甲、乙、丙三位老师分别讲授数学、物理、化学、生物、语文和历史，每位老师教两门课。化学老师和数学老师住在一起，甲老师最年青，数学老师和丙老师爱下象棋，物理老师比生物老师年长、比乙老师年青，三人中最年长的老师住家比其他二位老师远。问:三位老师各自分别教哪两门课？ 9甲、乙、丙、丁每人只会中、英、法、日四种语言中的两种，其中有一种语言只有一人会说。他们在一起交谈非常有趣: (1)乙不会说英语，当甲与丙交谈时，却请他当翻译； (2)甲会日语，丁不会日语，但他们却能相互交谈； (3)乙、丙、丁找不到共同会的语言； (4)没有人同时会日、法两种语言。 问:甲、乙、丙、丁各会哪两种语言？ 10一天，老师让小马虎把甲、乙、丙、丁、戊的作业本带回去，他见到这五人后就一人给了一本，结果全发错了。现在知道: (1)甲拿的不是乙的，也不是丁的； (2)乙拿的不是丙的，也不是丁的； (3)丙拿的不是乙的，也不是戊的；
英语议论文写作 一、文章结构 I.引言（Introduction）：引出话题 II.正文（Body）：阐明观点 a.阐述理由 b.分析利弊 c.提出举措 d.列举实例 III.结论/倡议（Conclusion）：重申观点/发出倡议 二、段落组织 每个段落紧扣一个主题展开。（段落的首句为本段的主题句） 写作范文： Nowadays, with more and more people going to work in the city in the hope of earning money, the phenomenon of left-behind children has become more and more common., which gives rise to a series of problems. First of all, neither will the kids who are left at home with their grandparents be well looked after because of their grandparents old age, nor will they have anyone to turn to for advice/guidance in times of difficulty. Besides, these kids have to help with the farm work, which takes up a lot of their time for study, so their study will have to suffer. What is worse is that some of them may even lose interest in study and so drop out of at an early age. As the problem is getting more and more serious, I do think it is necessary for the government as well as the parents to take some actions to improve the situation for the poor children. Children are the future of our nation, save them before it is too late! 三、常用表达方式 I.引言（Introduction）：引出话题 1.Nowadays, with the development of ___n.____, the phenomenon of _____n.____ is becoming more and more common, which gives rise to public concern./ which results in a series of problems. 2.As ______句子______, the problem/issue _____of + n.______/ ___that+同位语从句____ is getting more and more serious, which raises a storm of controversy./ which leads to heated debates. 3.Recently, there has been a growing tendency(趋势) ___that+同位语从句____, on which people’s opinions vary/differ (from person to person). 4.As the famous saying goes, ____名言警句____. 5.Recently, the problem ___of+n____ / ____that+ 同位语从句____ has been brought into
英语学术论文常用词句 1. 常用词汇与短语 差别：gaps between, differentiate between, discrepancies，no intergroup difference 存在，出现：occurred, occurrence ,existed, existence, presence, present 多数，少数：the overwhelming majority of, in the majority of cases ，a marked majority, handful 方法：approaches, avenues, methods, techniques, means, tools 发生率：Incidence, frequency, prevalence 发现，阐明，报道，证实：verify, confirm, elucidate, identify, define, characterize, clarify, establish, ascertain, explain, observe, illuminate, illustrate，demonstrate, show, indicate, exhibit, presented, reveal, display, manifest，suggest, propose, estimate, prove, imply, disclose，report, describe，facilitate the identification of ，screening ，isolation 改变：change, alteration, 高，增加：high, enhanced, elevated, increased, forced 各种，多种：in multiple types of, in various types of, in a variety of 关系，相关，参与：closely involved in, associated, 广泛的：in an extensive survey 执行：perform, carry out 降，少，缺：decrease, reduction, reduced, diminish, loss, suppression, deficient, low, weak, faint, light, absence, absent, undetectable, lack ,defective, negative,poor,impaired, greatly reduced or completely absent, frequently lost or down-expressed 角色，起作用：role, part （limited, potential, early, possible role） 可能性：feasibility 密切地：intimately 难理解的，似谜的：enigmatic (x remains enigmatic)
英语学术论文常用句型 Beginning 1. In this paper, we focus on the need for 2. This paper proceeds as follow. 3. The structure of the paper is as follows. 4. In this paper, we shall first briefly introduce fuzzy sets and related concepts 5. To begin with we will provide a brief background on the Introduction 1. This will be followed by a description of the fuzzy nature of the problem and a detailed presentation of how the required membership functions are defined. 2. Details on xx and xx are discussed in later sections. 3. In the next section, after a statement of the basic problem, various situations involving possibility knowledge are investigated: first, an entirely possibility model is proposed; then the cases of a fuzzy service time with stochastic arrivals and non fuzzy service rule is studied; lastly, fuzzy service rule are considered. Review 1. This review is followed by an introduction. 2. A brief summary of some of the relevant concepts in xxx and xxx is presented in Section 2. 3. In the next section, a brief review of the .... is given. 4. In the next section, a short review of ... is given with special regard to ... 5. Section 2 reviews relevant research related to xx. 6. Section 1.1 briefly surveys the motivation for a methodology of action, while 1.2 looks at the difficulties posed by the complexity of systems and outlines the need for development of possibility methods. Body 1. Section 1 defines the notion of robustness, and argues for its importance. 2. Section 1 devoted to the basic aspects of the FLC decision making logic. 3. Section 2 gives the background of the problem which includes xxx 4. Section 2 discusses some problems with and approaches to, natural language understanding.
排列 39 某铁路线共有14个客车站，这条铁路共需要多少种不同的车票？ 40 有红、黄、蓝三种信号旗，把任意两面分上、下挂在旗杆上表示不同信号，一共可以组成多少种不同信号？ 41 有五种颜色的小旗，任意取出三面排成一行表示各种 42(1)有五本不同的书，分别借给3名同学，每人借一本，有多少种不同的借法？(2)有三本不同的书被5名同学借走，每人最多借一本，有多少种不同的借法？ 43张华、李明等七个同学照像，分别求出在下列条件下有多少种站法: (1)七个人排成一排； (2)七个人排成一排，张华必须站在中间； (3)七个人排成一排，张华、李明必须有一人站在中间； (4)七个人排成一排，张华、李明必须站在两边； (5)七个人排成一排，张华、李明都没有站在边上； (6)七个人排成两排，前排三人，后排四人； (7)七个人排成两排，前排三人，后排四人，张华、李明不在同一排。 44甲、乙、丙、丁四人各有一个作业本混放在一起，四人每人随便拿了一本。问: (1)甲拿到自己作业本的拿法有多少种？ (2)恰有一人拿到自己作业本的拿法有多少种？ (3)至少有一人没拿到自己作业本的拿法有多少种？ (4)谁也没拿到自己作业本的拿法有多少种？ 45用0，1，2，3四个数码可以组成多少个没有重复数字的四位偶数？ 46用数码0，1，2，3，4，可以组成多少个小于1000的没有重复数字的自然数？
47在所有的三位数中，各位数字之和是19的数共有多少个？ 48某管理员忘记了自己小保险柜的密码数字，只记得是由四个非0数码组成，且四个数码之和是9。为确保打开保险柜至少要试多少次？ 49恰有两位数字相同的三位数共有多少个？ 50自然数8336，8545，8782有一些共同特征，每个数都是以8开头的四位数，且每个数中恰好有两个数字相同。这样的数共有多少个？ 51在1000到1999这1000个自然数中，有多少个千位、百位、十位、个位数字中恰有两个相同的数？ 52从1，3，5中任取两个数字，从2，4，6中任取两个数字，共可组成多少个没有重复数字的四位数？ 53从1，3，5中任取两个数字，从0，2，4中任取两个数字，共可组成多少个没有重复数字的四位数？其中偶数有多少个？ 54用1，2，3，4，5这五个数码可以组成12020有重复数字的四位数，将它们从小到大排列起来，4125是第几个？ 55在所有的三位自然数中，组成数字的三个数码既有大于5的数码，又有小于5的数码的自然数共有多少个？ 56在前2020个自然数中，含有数码1的数有多少个？ 57在前10000个自然数中，不含数码1的数有多少个？ 58用1～7可以组成多少个没有重复数字，且能被11整除的七位数？
英文论文写作常用的句型 1.xx 的特征在于: xx is characterized by… 2.xx 的2 个重要特征是：Two critical characteristics of xx are … 3.爱因斯坦指出xx 的特征如下：Einstein identified the following characteristics of xx… 4.Generally, … 一般来讲，原则上 … 千万不要用in principle，此原则非彼原 则也。 5.已经采用了：have adopted … 6.近年来：in recent years 7.over/during the past 10 years. 比如我们说SC 过去10 年间发展很快，用over，over 是一段时间的事儿；during 是事情发生在什么期间，有时间点的意思。 8.出于各种原因：for a variety of reasons 9.此外，另外：moreover, in addition 10.即： “…, namely …” 11.A 与B 的区别在于：A and B differ in the terms of … 12.谈及，关于：In terms of… 13.这些区别是因为：some of the difference stem from… 14.为了让：In order for xx to … 15.很大程度上依赖于rely heavily on … 16.基于… is based on… 17.不是…而是… not …, but rather … 18.这方面的例子有… “…, exemplified by …” 19.严格限制：impose the stringent restrictions on …; 受到这些限制：be subject to the restrictions. 20.产生这个问题的原因与… 有关：The problem arises in part from … [Tip]：多用although, however, while, moreover, in addition 这样的词儿，句子之间的逻辑关系显得很清楚，读paper 的人会觉得你的论文很清爽。
xx英语作文万能模板及万能句型汇总 作文万能模板 一、阐述主题题型 要求从一句话或一个主题出发，按照提纲的要求进行论述． １．阐述名言或主题所蕴涵的意义．２．分析并举例使其更充实．二、解决方法题型 要求考生列举出解决问题的多种途径 １．问题现状２．怎样解决（解决方案的优缺点）Confronted with A，we should take a series of effective measures to cope with the situation. For one thing，---------------（解决方法一）。For another -------------（解决方法二）。Finally，--------------（解决方法三）。Personally，I believe that -------------（我的解决方法）。Consequently，I'm confident that a bright future isawaiting us because --------------（带来的好处）。 三、说明利弊题型 这种题型往往要求先说明一下现状，再对比事物本身的利弊，有时也会单从一个角度（利或弊）出发，最后往往要求考生表明自己的态度（或对事物前景提出预测） １.说明事物现状２.事物本身的优缺点（或一方面）３.你对现状
（或前景）的看法 Nowadays many people prefer A because it has a significant role in our daily life. Generally，its advantages can be seen as follows. First ----------------（Ａ的优点之一）。Besides -------------------（Ａ的优点之二）。 1 / 13 But every coin has two sides. The negative aspects are also apparent. One of the important disadvantages is that ----------------（Ａ的第一个缺点）．To make matters worse，------------------（Ａ的第二个缺点）． 四、议论文的框架 （1）不同观点列举型（选择型） There is a widespread concern over the issue that __作文题目_____. But it is well known that the opinion concerning this hot topic varies from person to person. A majority of people think that _ 观点一________. In their views there are 2 factors contributing to this attitude as follows：in the first place，___原因一_______.Furthermore，in the second place，___原因二_____. So it
Part One: Unnecessary Words All authorities on the style of English prose agree that good writing is concise. Careful writers say what they mean in as few words as possible. Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. It follows that any words which perform no useful function in the sentence—that is , which add nothing to the meaning—should be edited out. Almost every text that has been translated into English from Chinese( or that has been written directly in English by a native speaker of Chinese) contains unnecessary words. Draft translations are commonly full of them, and even polished final versions are seldom free of them. Read anything that has been published in English for foreign readers—a magazine article, a news story, an advertisement, a government report—and you are likely to find superfluous words. Read even the shortest of English texts—the label on a food product , a billboard on Chang’an , the company name on the front of a building—and , if you are on the alert to recognize them, chances are that you will find words that could and should have been omitted. Unnecessary words are the hallmark of Chinglish. Unnecessary words can be any part of speech—nouns, verbs, adjectives, adverbs, prepositions, articles, and so on. In the following chapters we shall consider the most important types, starting with unnecessary nouns and verbs, which often go hand in hand. I .Unnecessary Nouns and Verbs Nouns Most unnecessary nouns in Chinglish appear not alone but in short phrases, combined with articles and prepositions. When you eliminate the nouns , you eliminate the articles and prepositions as well. Many of these nouns are easy to recognize. They are plainly redundant because their sense is already included or implied in some other element of the sentence. Here are a few examples (A) with suggested revisions (B)and comments in brackets. 加快经济改革步伐 A: to accelerate the pace of economic reform B: to accelerate economic reform (To accelerate = to increase the pace of ) 农业获得大丰收 A: There have been good harvests in agriculture. B: There have been good harvests. [“Harvest” implies agriculture: there are no harvests in industry.] 城乡人民生活水平持续上升。 A: Living standards for the people in both urban and rural areas continued to rise. B: Living standards in both urban and rural areas continued to rise. 【The notion of living standards applies only to people.】 这些困难从本质上说是暂时的。 A：These hardships are temporary in nature. B: These hardships are temporary. [Any adjectives describes the “ nature” or “character” of the noun it modifies . To say that
五智巧问题 1 某国的货币有1元、50分、20分、10分、5分、2分、1分共七种硬币（1元=100分）。某人带了9枚硬币去买东西，凡不超过2元的东西他都能拿出若干枚硬币支付，钱数正好，无需找钱。这9枚硬币的总面值最多是多少？最少是多少？ 2 A，B，C，D四人进行围棋比赛，每人都要与其他三人各赛一盘。比赛是在两张棋盘上同时进行，每天每人只赛一盘。第一天A与C比赛，第二天C与D比赛，第三天B与谁比赛？ 3 有20间房子，有的开着灯，有的关着灯。在这些房子里的人都希望与大多数房子保持一致。现在，从第1间房子里的人开始，如果其余19间房子的灯开着的多，就把灯打开，否则就把灯关上。假设最开始时开灯与关灯的房子各10间，并且第1间房子的灯开着。那么，这20间房子里的人轮完一遍后，开着灯的房子有几间？ 4 甲、乙、丙三名选手参加长跑比赛。起跑后甲处在第一的位置，在整个比赛过程中，甲与乙、丙的位置次序共交换了7次。比赛结果甲是第几名？ 5 正义路小学共有1000名学生，为支持“希望工程”，同学们纷纷捐书，有一半男生每人捐了9本书，另一半男生每人捐了5本书；一半女生每人捐了8本书，另一半女生每人捐了6本书。全校学生共捐了多少本书？ 6 某杂志每期定价元，全年共出12期。某班部分同学订半年，其余同学订全年，共需订费720元；如果订半年的改订全年，订全年的改订半年，那么共需603元。问：这个班共有多少名学生？ 7 某次猜谜语比赛，谜语按难易分两类，每人可以猜三条。每猜对一条较难的谜语得3分，每猜对一条较容易的谜语得1分。结果有8人得1分、7人得2分、6人得3分、5人得4分、4人得5分。恰好猜对两条谜语的有几人？ 8 一排六棵树（见下图）分别是六个人栽的，A，B，C三人栽的是大树，D，E，F三人栽的是小树。如果A与E栽的树相隔两棵树，B与F栽的树相隔一棵树，那么C栽的树是左起第几棵？
考研英语小作文 一．分值：小作文（100字）10分 二．小作文类型：感谢信(thanks)，祝贺信(congratulation)，道歉信(apology)，邀请信(invitation) 倡导信（建议信）(suggestion); 投诉信（complaint），询问信（inquiry）请求信（require）婉拒信(decline)，求职信（application），推荐信(recommendation)，公告（notice）备忘（memo）, 三．小作文格式：二三原则1.二个逗号；2.三个段落； 1.二逗号：称呼后，署名后 2.三段式：首段说明写信意愿和目的+第二段展开内容+末端呼应首段，再一次强 调写信用意，并表达祝愿。 四．小作文格式注意事项： 1.称呼的格式：Dear Sir, Dear Madam Helen, Dear John, Dear Professor Smith, 男士：Mr. 女士：Mrs./ Ms./Miss 教授、博士：Prof./Dr. 市长，法官，议员，其他高官：Hon.(Honorable,尊敬的) 编辑：Editor 不清楚对方姓名：Dear Sir/Sirs, Dear Madam/Madams, Dear Sir or Madam, To Whom It May Concern, 3. 署名的格式：右下角，Yours sincerely, Sincerely yours, Sincerely, 4.正文开头空四格
A letter of Congratulations Dear Jack, I am so delighted to hear that you have just been admitted into the prestigious Peking University. Please accept my heartiest congratulations to you! This is a special moment for you and all the friends as well as relatives, and I do want to share the happiness with you. After years of hard and creative work and study, you have finally got what you really deserve. I’m convinced that this will be a new beginning, a chance for you to embrace a broader future. I wish you good luck and keep pursuing a brighter future. Sincerely yours, Li Ming 五．小作文内容注意事项： 1.娓娓道来+洗耳恭听 2.晓之以理+声泪俱下 3.画龙点睛+无路可退 例： Dear Teacher Zhang, I’m one of your millions of students, I came to attend your English class last week, in which I acquired much information about writing skills. In the meantime, I learned another more important thing by accident. I may be shot by a magic arrow.
学术论文写作格式要求英文摘要常用句型 英文摘要虽然不像公文文体那样程序化,但由于它在语法结构上有较强的倾向性,因此英文摘要许多句型模式出现的频率很高,熟练掌握这些常用句型模式,有助于提高英文摘要写作质量和速度,进而能保证其可读性。下面举一些有代表性和常用的句式供参考。 1)常用于摘要开头部分的有4类。 A. (In this paper,…) The results of A simple method for...cases of The...approach for An attempt to (do)... presented described (through…) is(are) reported (under...) discussed (along with...) analyzed 例如:The results of analyses carried out on the process waters generated during the hydrolysis of oil shale from Rundle, Australia via the Fischer assay retorting process are presented. 对用费希尔试料蒸馏法热解澳大利亚鲁德尔页岩所产生的工业废水提出了分析结果。 B. The chief aim purpose object objective the present study of this investigation the research these studies to obtain… to evaluate… is (was/has been/will be) to find out… to establish… to asses… 例如:The main purpose of this study was to evaluate the safety and utility of tread ill exercise testing prior to the discharge of patients admitted with acute myocardial infarction. 研究旨在对因急性心肌梗塞住院的患者在出院前进行踏旋器运动试验的安全性与效用做出评价。
一找规律 1．根据下列各串数的规律，在括号中填入适当的数： （1）1，4，7，10，（），16，…… （2）2，3，5，8，13，（），34，…… （3）1，2，4，8，16，（），…… （4）2，6，12，20，（），42，…… 2．观察下列各串数的规律，在括号中填入适当的数： （1）2，3，5，7，11，13，（），19，…… （2）1，2，2，4，8，32，（），…… （3）2，5，11，23，47，（），…… （4）6，7，3，0，3，3，6，9，5，（），…… 3．观察下列各串数的规律，并在每小题的两个括号内填入适当的数： （1）1，1，2，4，3，9，4，16，（），25，6，（），…… （2） 15， 16， 13， 19， 11， 22，（）， 25， 7，（），…… 4．按规律填上第五个数组中的数： {1，5，10}{2，10，20}{3，15，30}{4，20，40}{ } 5．下面各列算式分别按一定规律排列，请分别求出它们的第40个算式： （1）1＋1，2＋3，3＋5，1＋7，2＋9， 3＋11，1＋13，2＋15， （2）1×3，2×2，1×1，2×3，1×2，2×1，1×3，…… 6．下面两张数表中的数的排列存在某种规律，你能找出这个规律，并根据这个规律把括号里的数填上吗？ （1）2 6 7 11 （2）2 3 1
4 4 ( ) 1 3 5 2 3 5 5 6 4 ( ) 3 7．下面各列数中都有一个“与众不同”的数，请将它们找出来： （1）3，5，7，11，15，19，23，…… （2）6，12，3，27，21，10，15，30，…… （3）2，5，10，16，22，28，32，38，24，…… （4）2，3，5，8，12，16，23，30，…… 8．下图所示的两组图形中的数字都有各自的规律，先把规律找出来，再把空缺的数字填上： （1） （2） 9．观察下面图形中的数的规律，按照此规律，“？”处是几？ 10．根据左下图中数字的规律，在最上面的空格中填上合适的数。