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一．英汉互译

1.Friction（摩擦）will cause the bearings to become heated 摩擦会使轴承变热

2.Each atom normally has the same number of electrons revolving about the nuclear asit has protons.

通常每个原子内绕原子核旋转的电子数和原子核内的质子数相同

3.In a solid or liquid, the molecules are much closer together, resulting in much more material in a given volume.

在液体和固体中，分子结合得紧密得多，导致在一定体积内的物质也多得多 4.The determination of what element or elements are present in a substance is called qualitative analysis .

测定物质中存在哪种或哪几种元素叫做定性分析 5.The steel should not contain more than 0.5% of carbon 钢中的含碳量不应超过0.5%

6.Sound does not travel as fast as light 声音不如光传播的快

7.The installation of the new equipment is the responsibility of the manufacturers. 厂家负责安装这种新机器 二．填空题

1.From the results of the measurements it can be concluded that temperatures on the surface of Venus is too hot for life as known on earth.

从观测结果可以得出结论：金星表面的温度对地球上已知的生物来说太高。 2.It is generallyaccepted that irradiation is destructive to human tissues. 一般认为，辐射对人体组织有害

3.Insufficient air will prevent complete combustion whereas/while too much air will reduce the temperature.

空气不足会阻碍充分燃烧，然而太多的空气又会降低温度

4.Results show that there was no significant change in weight during the period of study

结果表明试验期间重量没有显著变化

5.The distance between two stars ismeasured in light -year 星球之间的距离是用光年计算的

6.The type of pump used will vary according to what type of liquid is being pumped 根据所泵的是什么液体，泵的类型也不同

7.A pressure of 100 b/in2 is applied to the piston 在活塞上加了一个100磅/平方英寸的压力

8.Just as planets move round the sun,so electrons move round the nucleus 正如行星环绕太阳运转那样，电子环绕核子运转 9.The alloy contains 5% nickle and 5% iron 这种合金里有5%的镍和5%的铁

10.With all his achievements he remains modest and prudent 他虽有很多成就，但还是谦虚谨慎

11.Carbon is an element with an atomic weight of 12.01 碳的原子质量是12.01

12.The steel plate is 6 square meters in area 那块钢板的面积为6平方米

13.As Fig.1shows, the population has increased by 20% since last year 如图所示，自去年来人口增加了20%

14.Such high--speed aircraft travelsat 700 m.p.h.

这种高速喷气式飞机的速度为700英里/小时 15.How much the new machinery has been installed? 有多少新机器已经安装

16.It isunknown/doubtful how accurate these results are 人们还不知道这些结果究竟有多么准确

17.From the fossil embed in it, we can reduce?the age of a rock. 从嵌入它的化石，我们可以归纳出一个岩石的年龄 18.Thereadingof the temperature was 96 degree 气温的读数是96度

19.The computer are large and heavy therefore they will soon be obsolete 这些电脑很笨重，因此它们很快会被淘汰。

20.The magnetic flux is carried through iron rather likecopper--conducting electricity 就像铜导电似的，铁能传导磁流

21.Blood cells are oftwo kinds,white blood cell(WBC) and red blood cell(RBC) 血细胞可以分为两种，白细胞和红细胞。 22.Steel is much more expensive than cast--iron 钢比铸铁要贵得多

23.Research is going onas tohow the industrial pollution can be controlled 关于如何控制工业污染的研究正在进行。

24.It is necessary to determine whether those results are correct 有必要确定一下这些实验结果是否准确。

25.The progress of the project will depend onwhat the weather conditions are like 工程的进展取决于天气情况如何

26.The carbon content in a steel can be determined by chemical analysis 化学分析可以确定钢中的含碳量

27.These materials may be classified as conductors 这些材料可以归在导体类

28.This makes the research more difficult 这使得实验变得更加困难。

三．用括号中单词的适当形式或词组填空

1.Since 1976, this research center has undergone radical changes (undergo) 自从1976年以来，这个研究中心经历了巨大的变化。 2.Books canbe divided intoseveral classes (divide) 书籍可以被分为很多种

3.A knife is a tool used for cutting (use) 刀是一种用来切割的工具。

4.Considerable lateral pressure is exerted by the concrete during compaction(compact)

在紧压的过程中，混凝土会产生相当大的侧压力。

5.Transformers are widely used in the transmission of electrical power (transmit) 送电时广泛用于传输电力

6.Metals fall into two main categories, ferrous (based on iron) and non-ferrous. (fall) 五金主要分为两大类，有铁的（以铁为基础）和无铁的。 7.The cold weather contracts with last week’s heat (contract)

很冷的天气结束了上一周的高温。contracts with意思为合同.contract有缩短之意

8.Discharge of the contents of tank is performed by a pump (discharge) 用泵能抽去油箱中的油

9.In the view ofthe fact that the bearing is worn, it must be replaced with a new one

(view)由于轴承磨损了，必须更换

10.This machine is identical withthe other one in design (identical) 这台机器与另一台机器在设计上相同

11.The machineis composed ofseveral different parts (compose) 机器是由许多不同部件组成的

12.Experimental results obtained in the laboratory are compared with the theoreticalcalculations. (compare)从实验室求得的实验结果与理论计算结果相比较。

13.The wire is two meters inlength (long) 那根金属线有两米长

14.Short course are arranged which last for five days and comprise demonstration and visit to a hospital (comprise)

短期课程安排好了，持续五天，包括演示和访问医院。

15.Good production methods enable the factory to manufacture more cars (manufacture)好的生产方法使工厂生产更多的汽车。

16.The output of the factory has increased by 20 percent as compared withlast year (compare)与去年相比这家工厂的产量增加了20%

17.High carbon steel may be hardened by heating it to a certain temperature and then quickly cooling in water (cool)

加热到一定温度再迅速用水冷却，可以使高碳钢变坚硬。 四．改写下列句子（或改写句中划线部分）保持意思不变 1.Cast-iron is much cheaper than steel

→Cast-iron is not quite so expensive as steel 钢比铸铁要贵得多

2.This car is identical with the other one in every aspect

→This car is exactly the same as the other one in every aspect

3.The reason why the bearing must be replaced with a new one is that it is worn →Seeing that the bearing is worn ,it must be replaced with a new one. 或者

In the view of the fact that the bearing is worn ,it must be replaced with a new one 由于轴承磨损了，必须更换。

4.The job is such that it demands the greatest skill →The job is such as to demand the greatest skill 这是一项需要高度技艺的工作 5.Thismakes the screw tighter →This tightens the screw 这样可以使得螺丝更紧些

6.It is necessary to examine whether these results are accurate →It is necessary to examine the accuracy of these results 有必要检查一下这些结果是否精确。

7.An object becomes hot when it is placed in the sun →An object becomes hot when placed in the sun 当把一个物体放在阳光下时，它会变热

8.The speed of the train caused it to leave the rails on the curve →The speed of the train made it leave the rails on the curve 由于火车告诉行驶，它在弯道出轨了

9.The size of the flow-meter is such that the flow is unaffected by it → The size of the flow-meter is such as to have no effect on the flow 流量计的大小是这样设计的，即它不影响流速

10.The increase in the temperature lead to the expansion of the metal →The increase in the temperature result in the expansion of the metal 温度的增加使金属膨胀

11.Languages coming from Latin,such as French,Italian and Spanish have some characters in common

→Such Languages coming from Latin, as French,Italian and Spanish have some characters in common

源于拉丁文的语言如法语，意大利语以及西班牙语都有一些共同的特点

12.Because the electronic computers are high in computing speed and reliable in operation,they have found wide application in computing and designing

→The reason why the electronic computers have found wide application in computing and designing is that they are high in computing speed and reliable in operation

电脑被广泛用于计算和设计是因为它计算快运行可靠。

13.The protons is the opposite of the electron,being a particle of positive electricity →The protons is the opposite of the electron,since a particle of positive electricity 质子的性质和电子相反，它是一种带正电的粒子 14.The contents of the tank are discharged by a pump

→Discharge of the contents of the tank is effected/performed by a pump 用泵能抽去油箱中的油

15.Expansion joints allow the pipes to expand or contract →Expansion joints permit the pipes to expand or contract 伸缩接头能使管子膨胀或收缩

16.Information is needed as to which type of fuel is most suitable →Information is needed as to the most suitable type of fuel 需要有关哪种燃料是最适合的信息 五．根据下面树状图填空

Drinks are of two categories,alcoholic drinks and nonalcoholic drinks .The examples for alcoholic drinks include sprits,wine and beer.The nonalcoholic drinks contain the hot and the cold.The hot nonalcoholic drinks are of many types tea ,coffee and cocoa .The cold nonalcoholic drinks comprise aerated and non-aerated .Soda water and coca-cola are aerated while milk and fruit juices are non-aerated 六．将试管里充入一半水，将其加热到接近沸点。再将试管固定在试管架上让其冷却。每分钟测一次温度。用一玻璃棒小心搅拌。记下你提出的读数，再将其绘在温度对于时间的图表中。再用一个里面有一半晶体的试管重复这一个实验。让这固体熔化。将熔化的晶液加热到100℃，再将试管固定在试管架上使其冷却。按照先前的办法记下结果，绘成图表

Fill a test-tube half full of water and heat it nearly to boiling point. Support the tube on a stand and allow it to cool.Take the temperature every minute. Stir carefully with a glass rod. Record the reading you obtain，and plot them on a graph of temperature against time. Repeat this with a tube half-full of crystals. Allow the solid to melt. Heat the liquid to 100 ℃,fix the tube on the stand and allow it to cool. Record the results as before and plot them.

1、An equation is a mathematical expression in which the two sides balance, such as 1=2-1 and 52=25.

2、A cigarette lighter is a device for igniting cigarettes. It consists of three main parts: the housing, the flint, and the lighter fluid.