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本课程起止时间为:2020-02-25到2020-06-28
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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。】

第二周 词类(II)介词 单元测验二

1、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题:_ 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、 问题: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、 问题:_ 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、 问题: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、 问题: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

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