2：In this case, the failure point（失效点） corresponds to a factor of safety of 1. 划线部分做什么成分？
3：Einstein put up the principle of relativity, valid not only in mechanics but in all physics. 划线部分是形容词短语做后置定语
智慧树正确答案：20 parts per million
6：这台电压表/伏特计如此灵敏，可以测量出电压的微小变化。This is such sensitive voltmeter that it can measure the slightest changes in voltage.
7：读者学会这些基本概念很重要，否则后面内容的讨论理解起来会有困难。It is important for the reader to learn the basic concepts well, the discussion of later topics will be difficult to understand.
8：These transistor circuits can amplify voltage signals with minimum waveform distortion. 下划线介词短语充当___。
9：Both m and n are therefore even, to our choice of m and n.
1：The process of measurement, the most fundamental operation in physics, will be discussed briefly in this chapter.该句中的同位语是
智慧树正确答案：the most fundamental operation in physics
2：Vitamin B9 — also known as folate（叶酸）— can be found in many fruits, vegetables and beans. 该句中的插入语是
智慧树正确答案：also known as folate
3：make use of是什么意思？
4：The oxygen equipment made it possible for climbers to rest very high altitudes.
智慧树正确答案：effect of A on B
2：Computers are powerful tools which perform fast, accurate calculations over huge sets of data. 该句表达了一个客观情况因此使用了
3：It is shown that a concentration on the preservation of routing abilities might damage the preservation of community structure, and vice versa. 该句这样排列的主要原因是保持句子平衡
4：The grain output of last year in our province was 20％over that of 1990. 可翻译为：我们省去年的粮食产量比1990年增加20％。
5：The earth is 49 times the size of the moon. 可以翻译为：地球是月球大小的 50倍。
6：Convection(对流) is a __ simpler physical process than conduction.
7：We show that a discriminatively trained, multi-layer capsule system achieves state-of-the-art performance on MNIST and is ____ than a convolutional net at recognizing highly overlapping digits.
1：This company was the first portable radios as well as cassette tape recorders in the world.
2：The purpose of new technology is to make life easier,it more difficult.
3：I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth
4：the house on fire, he dialed 119.
5：Mark often attempts to escape whenever he breaks traffic regulations.
6：It is our purpose in this section to introduce the basic meaning of the solution of a differential equation. 下划线部分在句中做 。
7：与电压源相连的灯形成一个简单的电路。A lampto a voltage source forms a simple circuit.
1：The shocking news mad me realize __ terrible problems we would face.
2：It is still under discussion __the old bus station should be replaced with a modern hotel or not.
智慧树正确答案：It is modern.
3：I am afraid he’s more of a talker than a doer, which is __ he never finishes anything.
4：Before a problem can be solved, it must be obvious __the problem itself is.
5：Twenty students want to attend the class that aims to teach __ to read first.
6：电子虽小，但它们在形成电流方面发挥了重要作用。Small __ electrons are, they play an important role in the formation of electric current.
7：A body velocity is not constant is said to be accelerated.
1：If I _ you, I’d join the army.
2：“If the sun __ tomorrow, what would we do?”
3：If you __ to see Mary, what would you tell her?
4：I would have said “Hello” to him if I __ your brother.
5：If you had wanted to buy a record, what __? 智慧树正确答案：would have been understood
1：It _ Mike and Mary who helped the old man several days ago.
2：It was not until 1920 _ regular radio broadcasts began.
3：She said she would go and she ____ go.
4：It was the training _ he had as a young man _ made him such a good engineer.
智慧树正确答案：R 、 R 、 W 、 W 、 R 、 W 、 R
5：— Were all three people in the car injured in the accident? — No, __ only the two passengers who got hurt.
1：The boy wanted to ride his bike in the street, but his mother told him .
2：The traditional goal of science is to discover how things are, not how they ought .
3：Tom wanted to play football with his friends in the street, but his father told him. 智慧树正确答案：not to
4：.—I hope the children won’t touch the dog. —-I’ve warned them .
5：Some students are going to China in summer vacation, and.
智慧树正确答案：Seated on the grass
1：His mother had talked to him for many minutes while he was watching TV,but .
智慧树正确答案：little did he hear
2：—— Hello,Zhu Hua.I’ll have to return to Canada because I’ve worked here for a year. —— ! 智慧树正确答案：How time flies
3：During the war, but also he lost his wife and his child.
智慧树正确答案：not only was his job in the lab taken away
4：—— We have to stop talking here outside.Listen, ! —— Hurry up, or we’ll be late.
智慧树正确答案：There goes the bell
5：I think this is the first time that we have met. anywhere.
智慧树正确答案：Never before have we seen each other
3：Forces must exist between the object and the incline that prevent the object from sliding. 这个句子中，将定语从句放在句子末尾是为了保持句子平衡
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