第一周词类I冠词、并列连接词、数词

单元测验一

1、单选题:
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. ‎
选项:
A: the
B: a
C: an
D: /
答案: 【 a

2、单选题:
平均速度等于末速度的一半。‎‌The average velocity is about half ____ final velocity. ‎
选项:
A: the
B: a
C: an
D: /
答案: 【 the

3、单选题:
这个电路由电池、电阻器和电容器组成。‍‌This circuit consists of a battery, a resistor ____ a capacitor.‍
选项:
A: and
B: or
C: but
D: for
答案: 【 and

4、单选题:
原子的中心,即原子核,包含了带正电荷的微粒,称为“质子”。​‍The center, ­­­____ nucleus, of an atom contains positively charged particles called protons. ​
选项:
A: and
B: or
C: but
D: for 
答案: 【 or

5、单选题:
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.   ​
选项:
A: and
B: or 
C: but
D: for 
答案: 【 or 

6、单选题:
‍这个电热器消耗的电能比那个电热器多三倍。‏‍This electric heater dissipates ____that one.‏
选项:
A: three times more energy than
B: four times as great energy as
C: five times as great energy as
D: three times as great energy as
答案: 【 four times as great energy as

7、单选题:
‎月球的质量为地球的八十分之一。​‎The mass of the moon is ____.​
选项:
A: 1/80 what the earth is
B: 1/80 that of the earth
C: 1/80 of the earth
D: 1/80 the earth
答案: 【 1/80 that of the earth

8、单选题:
‏温度每上升一度,电容降低百万分之七百五。 ​‏The capacitance will decrease by ___________ per each degree rise in temperature.​
选项:
A: 750 parts per million
B: 750 parts in million
C: 750 parts of a million
D: 750 parts in
答案: 【 750 parts per million

9、单选题:
‎从1970年至1974年间,晶体管收音机的产量增长了五倍。‌‎From 1970 to 1974, the production of transistor radios was increased _________.‌
选项:
A: five times
B: by a factor of 5
C: by a factor of 4 
D: by a factor of 6
答案: 【 by a factor of 6

10、单选题:
‏这个电源上的电流为零点零零几安。​‏The current through the power supply is _______.​
选项:
A: a few hundredth an ampere
B: a few thousandth of a ampere
C: a few hundredths of an ampere
D: a few thousandths of an ampere
答案: 【 a few thousandths of an ampere

11、填空题:
这两极之间的电压很小。‌‍____ voltage between the terminals is very small. ‌
答案: 【 The

12、填空题:
关闭开关,电路中的电流就会消失。‎‍Turn the switch off ____ the current in the circuit will disappear. ‎
答案: 【 and

13、填空题:
‌月球的体积约为地球的四分之一。(请用“倍数/分数+the +名词”的结构将句子补充完整)​‌The moon is about one-quarter ___________ the earth.​
答案: 【 the size of

14、填空题:
‌通过改变VBE零点零几伏特,就能极大的改变基极电流。‍‌By varying VBE only ___________, the base current(基极电流)can be changed significantly.‍
答案: 【 a few hundredths of a volt##%_YZPRLFH_%##several hundredths of a volt

15、填空题:
‍在这样的角速度的时候,物体的重量将会是在一个重力加速度环境下的四倍。‍‍At this angular speed, the weight of a body will be four times ________ in 1g environment.‍
答案: 【 what it is

第二周词类II介词

单元测验二

1、单选题:
‌These transistor(晶体管) circuits can amplify(放大) voltage signals with minimum waveform distortion(波形失真). 下划线介词短语充当_______。‏
选项:
A: 状语
B: 定语
C: 补语
D: 表语
答案: 【 状语

2、单选题:
‌The sound-carrying medium may be matter in any state. 下划线介词短语充当_______。‏
选项:
A: 状语
B: 补语
C: 定语
D: 表语
答案: 【 定语

3、单选题:
‌The resistance of the load (负载)is too high for the amplifier(放大器). 前后两个下划线介词短语分别充当_______。‏
选项:
A: 定语……状语
B: 定语……表语
C: 补语……状语
D: 补语……补语
答案: 【 定语……状语

4、单选题:
‎A circuit may be defined as a path for current flow. 前后两个下划线介词短语分别充当_______。‍
选项:
A: 状语……状语
B: 定语……定语
C: 补语……定语
D: 补语……状语
答案: 【 补语……定语

5、单选题:
‏Alternating current(交流电) as a source of power has certain advantages over direct current(直流电). 前后两个下划线介词短语分别充当_______。‍
选项:
A: 状语……状语
B: 定语……定语
C: 补语……定语
D: 补语……状语
答案: 【 状语……状语

6、单选题:
‏_______ further increasing quantum-well(量子阱) number, the increase of the emission energy(发射能量) becomes slow.‌
选项:
A: For
B: With
C: In
D: By
答案: 【 With

7、单选题:
‌A simple approach _______ expressing a function(函数) is shown _______ Fig. 4-1.‎
选项:
A: of……by
B: of……in
C: to……by
D: to……in
答案: 【 to……in

8、单选题:
‍_______ this case the velocity of an object varies linearly (线性地) ________ the time.‌
选项:
A: In……with
B: In……at
C: Under……with
D: Under……at
答案: 【 In……with

9、单选题:
‏We can easily see from the definition (定义) of k _______ the ratio of a force _______ a length that the unit of elastic potential energy (弹性势能) is the same as the unit of work (功) .​
选项:
A: by……with
B: by……to
C: as……with
D: as……to
答案: 【 as……to

10、单选题:
‍The two balls move _______ the opposite directions _______ the same stress(应力).‌
选项:
A: in……on
B: in……under
C: to……under
D: toward……at
答案: 【 in……under

11、填空题:
‍There is a great demand _______ these devices. (填入一个恰当的介词,使句意通顺。)‏
答案: 【 for

12、填空题:
‎_______ analogy(类比) with Eq. (4), we have the scale factor(比例系数).(填入一个恰当的介词,使句意通顺。)​
答案: 【 By

13、填空题:
‎_______ being compressed(压缩), the volume of a substance will be reduced. (填入一个恰当的介词,使句意通顺。)‍
答案: 【 On##%_YZPRLFH_%##Upon

14、填空题:
‏_______ more details on numerical techniques(数值方法) refer to Ref. [6-9]. (填入一个恰当的介词,使句意通顺。)‍
答案: 【 For

15、填空题:
‍These results have to be interpreted _______ caution(谨慎). (填入一个恰当的介词,使句意通顺。)‎
答案: 【 with

第三周词类III形容词及副词、代词、名词

单元测验三

1、单选题:
‌Both m and n are therefore even,         to our choice of m and n.​
选项:
A: contrary  
B: contrarily  
C: contradiction  
D: contradict
答案: 【 contrary  

2、单选题:
‎In cellular systems, covering the area is generally divided into a plurality of cells         to cellular.‎
选项:
A: similarly  
B: similar  
C: similarity  
D: assimilate
答案: 【 similar  

3、单选题:
‎Super pixels have emerged as a form of over-segmentation meant to provide clusters of perceptually similar pixels throughout an image, thus capturing the redundancy         in most natural images.‌
选项:
A: inherently 
B: inherence  
C: inherent  
D: coherent
答案: 【 inherent  

4、单选题:
‏In practice, a lot of limitations arise         to the correlation of antennas and hardware impairments.​
选项:
A: due 
B: dually  
C: during  
D: endure
答案: 【 due 

5、单选题:
‌栅极之所以能做到这点,主要是由于它非常靠近阴极。‎‌The grid is able to do this primarily because of ______________to the cathode.‎
选项:
A: the great proximity of it 
B: its great proximity
C: it is proximate 
D: its proximate
答案: 【 its great proximity

6、单选题:
‏艾肯机的速度受到了限制,因为它使用的是继电器而不是电子器件。‍‏Aiken’s machine was limited in speed             rather than electronic devices.‍
选项:
A: using relays
B: by its use of relays
C: because using relays
D: because of relay’s use
答案: 【 by its use of relays

7、单选题:
‍由于变压器体积大、重量重、价格昂贵,所以把它们从电路中去掉能节省不少费用。‌‍Since transformers are large, heavy, and expensive,            results in considerable savings.‌
选项:
A: the circuit eliminates them
B: their eliminating from the circuit
C: their elimination from the circuit
D: the eliminating of them from the circuit
答案: 【 their elimination from the circuit

8、单选题:
‏______ 2.5 and 2.6 show two special kinds of robot.‎
选项:
A: Fig.
B: Figs.
C: The Fig.
D: The Figs.
答案: 【 Figs.

9、单选题:
‍This ______ must be kept within accepted limits, or the diode will suffer physical damage.‍
选项:
A: temperature rise
B: temperature's rise
C: temperatures rise
D: temperatures' rise
答案: 【 temperature rise

10、单选题:
‌A major application of the diode is in the production of a dc voltage from an ac supply, ______ as rectification.‏
选项:
A: a process referred to

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