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本课程起止时间为:2020-03-06到2020-07-30
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第一周 词类(I)冠词、并列连接词、数词 单元测验一

1、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题:这两极之间的电压很小。____ voltage between the terminals is very small. 
答案: 【The
分析:【本题考查定冠词the的特指用法,必须使用定冠词the。

12、 问题: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
分析:【本题考查祈使句 + and + 句子这一结构,表达条件与结果的逻辑关系。句子译为:关闭电源,该电路中的电流就会消失。

13、 问题: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
分析:【本句采用的是“倍数/分数+the +n”的句型结构。

14、 问题: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: 【(以下答案任选其一都对)a few hundredths of a volt;
several hundredths of a volt

分析:【零点零几表达的是百分之几,是a few hundredths, 因为分子不是1,所以序数词的分母要加s的复数形式,其后加介词of 加带有不定冠词的单位名词。

15、 问题: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
分析:【本句采用的是“倍数/分数+what从句”的句型结构。

第五周 比较等级、被动语态及时态 单元测验五

1、 问题:Convection(对流) is a ______ simpler physical process than conduction.
选项:
A:more  
B:many  
C:farther  
D:far
答案: 【far

2、 问题:The temperature of the earth is ______ the deeper you go.
选项:
A:the highest  
B:high   
C:higher   
D:more high
答案: 【higher   

3、 问题:Marketing techniques are becoming increasingly ______.
选项:
A:more sophisticated   
B:sophisticated  
C:much sophisticated   
D:very sophisticated
答案: 【sophisticated  

4、 问题:Finally, when grouping functions, synchronization overhead should ______ as much as possible by eliminating data dependency among the different function blocks.
选项:
A:minimized  
B:be minimized  
C:minimize  
D:is minimized
答案: 【be minimized  

5、 问题:Simulation and experimental studies _____, which show that the axial ratio bandwidth of the antenna is directly proportional to the thickness of the substrate.
选项:
A:have been performed
B: is performed  
C:was performed  
D:were performed 
答案: 【have been performed

6、 问题:The existing link security technology ______ to a wireless network to reduce security attacks.
选项:
A:has been applied  
B:have been applied  
C:has applied  
D:have applied
答案: 【has been applied  

7、 问题:So far we _____ the displacement of a particle.
选项:
A:will consider  
B:has considered  
C:have considered 
D:would consider
答案: 【have considered 

8、 问题:By using the methods of spectral analysis, astronomers ____ to learn a great deal about the sun.
选项:
A:is able  
B:will be able  
C:has been able  
D:have been able
答案: 【have been able

9、 问题:This is the first time we ____ this new type of rocket.
选项:
A:have ever seen  
B:has ever seen  
C:ever has seen  
D:had ever seen
答案: 【have ever seen  

10、 问题: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.
选项:
A:considerably better  
B:more better  
C:well  
D:much well
答案: 【considerably better  

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