习题

Don't worry about the future; or worry, but know that worrying is as effective as trying to solve an algebra equation by chewing bubblegum. The real troubles in your life are apt to be things that never crossed your worried mind; the kind that blindside you at 4:00 pm on some idle Tuesday.

不用去烦恼未来，或著烦恼著，但要知道烦恼本身的作用就等於想以嚼泡泡糖来解出代数习题，你人生真正的麻烦会是从未出现在你的忧虑中，那种再某个无所事事的周二下午冷不防出现的鸟事。

Once, me and my brother to his house to play, he is doing exercise.

有一回，我和我哥去他家玩，他正在做习题。

I'm not suggesting you give it a try, but mentally compartmentalizing NBA players can be a simple exercise

我并不建议你去尝试这样做，但是从精神上去划分 NBA 的球员类列可以是一道很简单的习题

The cultivating and improving for the imagery thinking of students is a most important part of improving the integrity thinking for physics, so it must be running through each part of the whole teaching for physics, whichever the concept teaching, rule teaching or exercise teaching, teachers need to have fierceness consciousness, hold characteristic of the subject, make great effort to mine and exert the processing pictures, idealizing pictures, geometry pictures, graphics representation and so on, create conditions to inspiring the interest of using the imagery thinking, consolidate the habitat of using the imagery thinking of students, cultivate the ability of imagery thinking.

学生形象思维能力的培养与提高，是发展完整物理思维能力的重要组成部分，必须贯穿整个物理教学过程的各个环节，不论是概念教学、规律教学还是习题教学，教师都要有强烈的意识，紧紧抓住学科特点，努力挖掘和发挥教材中的过程图景、理想化图景、几何图景、以及图形表象等，创设条件激发学生运用形象思维的兴趣，强化学生运用形象思维的习惯，培养学生的形象思维能力。

You can find the answers of all the exercises at the end of this book.

你可以在书末找到所有习题的答案。

You can find the answers of all the exercises at the end of this book.

在这本书后面，你可以找到所有习题的答案。

The study shows that generally the mathematics view of normal university students majoring in mathematics is right, they depict mathematics learning as a dynamical process. Besides some special traits belong to mathematics, estimation, measurement and decision making themselves are also in the math field; however there are still some people warp the mathematics view, believe that mathematics is an apodeictic collection. Haven't realized the power that mathematics can improve people's taste ability and perfect people's personality, they believe that math learning is a passive process during which students receive acknowledge. What is more, there are different believes existing in the understanding of mathematics essence, mathematics value and mathematics learning. These believes vary with different university students from different grades and genders.

研究数据表明，高等师范院校数学系大学生的数学观总体上来说还是比较正确的，认为数学学习是一个动态的过程，认为数学在社会生活当中有一定的作用，并且认为做数学除了有特定的内容以外，估算、测量及决定本身也为做数学；但仍有一小部分人的数学观还存在着偏差，认为数学是一堆绝对真理的总集，对数学能够培养人的审美能力以及数学能完善人的个性等较高层次的价值没有意识到，认为数学问题仅是与教材内容相关的习题和考试中的试题，并且对数学学习不感兴趣，认为数学学习是学生被动接受知识的过程，并且不同年级以及不同性别的大学生在对数学本质、数学价值以及数学学习的认识上都存在着差异。

The study shows that generally the mathematics view of normal university studentsmajoring in mathematics is right, they depict mathematics learning as a dynamical process.Besides some special traits belong to mathematics, estimation, measurement and decisionmaking themselves are also in the math field;however there are still some people warp themathematics view, believe that mathematics is an apodeictic collection. Haven\'t realized thepower that mathematics can improve people\'s taste ability and perfect people\'s personality,they believe that math learning is a passive process during which students receiveacknowledge. What is more, there are different believes existing in the understanding ofmathematics essence, mathematics value and mathematics learning.

研究数据表明，高等师范院校数学系大学生的数学观总体上来说还是比较正确的，认为数学学习是一个动态的过程，认为数学在社会生活当中有一定的作用，并且认为做数学除了有特定的内容以外，估算、测量及决定本身也为做数学；但仍有一小部分人的数学观还存在着(来源：Ad4BC论文网www.abclunwen.com)偏差，认为数学是一堆绝对真理的总集，对数学能够培养人的审美能力以及数学能完善人的个性等较高层次的价值没有意识到，认为数学问题仅是与教材内容相关的习题和考试中的试题，并且对数学学习不感兴趣，认为数学学习是学生被动接受知识的过程，并且不同年级以及不同性别的大学生在对数学本质、数学价值以及数学学习的认识上都存在着差异。

The study shows that generally the mathematics view of normal university studentsmajoring in mathematics is right, they depict mathematics learning as a dynamical process.Besides some special traits belong to mathematics, estimation, measurement and decisionmaking themselves are also in the math field;however there are still some people warp themathematics view, believe that mathematics is an apodeictic collection. Haven"t realized thepower that mathematics can improve people"s taste ability and perfect peoples personality,they believe that math learning is a passive process during which students receiveacknowledge. What is more, there are different believes existing in the understanding ofmathematics essence, mathematics value and mathematics learning. These believes vary withdifferent university students from different grades and genders.

研究数据表明，高等师范院校数学系大学生的数学观总体上来说还是比较正确的，认为数学学习是一个动态的过程，认为数学在社会生活当中有一定的作用，并且认为做数学除了有特定的内容以外，估算、测量及决定本身也为做数学；但仍有一小部分人的数学观还存在着偏差，认为数学是一堆绝对真理的总集，对数学能够培养人的审美能力以及数学能完善人的个性等较高层次的价值没有意识到，认为数学问题仅是与教材内容相关的习题和考试中的试题，并且对数学学习不感兴趣，认为数学学习是学生被动接受知识的过程，并且不同年级以及不同性别的大学生在对数学本质、数学价值以及数学学习的认识上都存在着差异。

T: Let's have a group contest. Sum up if-clause, the infinitive and useful expressions in this topic.

小组竞赛。引导学生通过习题归纳本话题的 if 条件句，不定式作主语的句子和有用的习惯表达法。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。