【单选题】
In previous times, then fresh meat was in short __________, pigeons were kept by many households as a source of food.
A. store
B. provision
C. reserve
D. supply
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【单选题】
Those gifts of rare books that were given to us were deeply _________.___
A. appreciated
B. approved
C. appealed
D. applied
【单选题】
It is our ___________ policy that we will achieve unity through peaceful means.___
A. consistent
B. continuous
C. considerate
D. continual
【单选题】
He is __________ about his chances of winning a gold medal in the Olympics next year.___
A. optimistic
B. optional
C. outstanding
D. obvious
【单选题】
The director was critical _______________ the way we were doing the work.___
A. at
B. in
C. of
D. with
【单选题】
In a sudden _____________ of anger, the man tore up everything within reach.___
A. attack
B. burst
C. split
D. blast
【单选题】
In Britain people _____________ four million tons of potatoes every year.___
A. swallow
B. dispose
C. consume
D. exhaust
【单选题】
I'd _____________ his reputation with other farmers and business people in the community, and then make a decision about whether or not to approve a loan.___
A. take into account
B. account for
C. make up for
D. make out
【单选题】
She cooked the meat for a long time so as to make it _____________ enough to eat.___
A. mild
B. slight
C. light
D. tender
【单选题】
The computer revolution may well change society as _____________ as did the Industrial Revolution.___
A. certainly
B. insignificantly
C. fundamentally
D. comparatively
【单选题】
A lot of ants are always invading my kitchen. They are a thorough ___________.___
A. nuisance
B. trouble
C. worry
D. anxiety
【单选题】
As we can no longer wait for the delivery of our order, we have to _________ it.___
A. postpone
B. refuse
C. delay
D. cancel
【单选题】
When a fire _________ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.___
A. broke of
B. broke out
C. broke down
D. broke up
【单选题】
The destruction of these treasures was a loss for mankind that no amount of money could __________.___
A. stand up to
B. make up for
C. come up with
D. put up with
【单选题】
The student was just about to ___________ the questions, when suddenly he found the answer.___
A. arrive at
B. submit to
C. work out
D. give up
【单选题】
When there are small children around, it is necessary to put bottles of pills out of _________.___
A. reach
B. hand
C. hold
D. place
【单选题】
The _________ of blood always makes him feel sick.___
A. sight
B. view
C. look
D. form
【单选题】
In Britain, the best season of the year is probably __________ spring.___
A. later
B. last
C. latter
D. late
【单选题】
Free medical treatment in this country covers sickness of mind as well as _________ sickness.___
A. normal
B. regular
C. average
D. ordinary
【单选题】
Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _________ to his confusion.___
A. extended
B. amounted
C. added
D. turned
【单选题】
A completely new situation will ___________ when the examination system comes into existence.___
A. arise
B. rise
C. raise
D. arouse
【单选题】
Cancer is second only __________ heart disease as a cause of death.___
A. of
B. to
C. with
D. from
【单选题】
The manager needs an assistant that he can _________ to take care of problems in his absence.___
A. count on
B. count in
C. count up
D. count out
【单选题】
We gave out a cheer when the red roof of the cottage came __________ view.___
A. from
B. in
C. before
D. into
【单选题】
They took ________ measures to prevent poisonous gases from escaping.___
A. fruitful
B. beneficial
C. valid
D. effective
【单选题】
Doing your homework is a sure way to improve your test scores, and this is especially true _______ it comes to classroom tests.___
A. when
B. since
C. before
D. after
【单选题】
In developing countries people are _______ into overcrowded cities in great numbers.___
A. breaking
B. filling
C. pouring
D. hurrying
【单选题】
There are other problems which I don't propose to ____________ at the moment.___
A. go into
B. go around
C. go for
D. go up
【单选题】
It is quite necessary for a qualified teacher to have good manners and _________ knowledge.___
A. extensive
B. expansive
C. intensive
D. expensive
【单选题】
I'm not sure whether I can gain any profit from the investment, so I can't make a(n) ______ promise to help you.___
A. exact
B. defined
C. definite
D. sure
【单选题】
The sports meet, originally due to be held last Friday, was finally ________ because of the bad weather.___
A. set off
B. broken off
C. worn off
D. called off
【单选题】
It has been revealed that some government leaders _______ their authority and position to get illegal profits for themselves.___
A. employ
B. take
C. abuse
D. overlook
【单选题】
Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first ________.___
A. intention
B. attempt
C. purpose
D. desire
【单选题】
The store had to _______ a number of clerks because sales were down.___
A. lay out
B. lay off
C. lay aside
D. lay down
【单选题】
All the students in this class passed the English exam ________ the exception of Li Ming.___
A. on
B. in
C. for
D. with
【单选题】
Writing is a slow process, requiring _______ thought, time, and effort.___
A. significant
B. considerable
C. enormous
D. numerous
【单选题】
Lightning is a ______ of electrical current from a cloud to the ground or from one cloud to another.___
A. rush
B. rainbow
C. rack
D. ribbon
【单选题】
I caught a ________ of the taxi before it disappeared around the corner of the street.___
A. vision
B. glimpse
C. look
D. scene
【单选题】
Students or teachers can participate in excursions to lovely beaches around the island at regular _________.___
A. gaps
B. rate
C. length
D. intervals
【单选题】
Physics is ________ to the science which was called natural philosophy in history.___
A. alike
B. equivalent
C. likely
D. uniform
【单选题】
The new appointment of our president _______ from the very beginning of next semester.___
A. takes effect
B. takes part
C. takes place
D. takes turns
推荐试题
【填空题】
91.>直流电动机中电枢反应使磁路总磁通减少，电动机的输出转矩___，火花增大。
【填空题】
92.>在直流接触器的触点上并联___可避免触头产生火花。
【填空题】
93.>频敏变阻器的等效电阻值是随绕线型异步电动机的转速逐渐上升而___。
【填空题】
94.>2CW52是一种___的型号。
【填空题】
95.>电流放大作用是___的主要特性。
【填空题】
96.>晶闸管有三个电极，即阳极、阴极和___。
【填空题】
97.>晶闸管的管芯是由___四层半导体材料组成，它具有三个PN结。
【填空题】
98.>晶闸管导通后，切除触发电压，晶闸管处于___状态。
【填空题】
99.>断开阳极电源，降低正向阳极电压，给阳极加反向电压是晶闸管___条件。
【填空题】
100.>维持晶闸管导通所必须的最小阳极电流称为___。
【填空题】
101.>单相桥式整流电路中每只二极管承受的反向电压是单相全波整流时的___。
【填空题】
102.>典型的串联型稳压电路由取样、基准、___和调整四个部分组成。
【填空题】
103.>桥式起重机控制电路中，所有过流继电器的常闭触头是___的。
【填空题】
104.>起重机的电力驱动有主钩、副钩、大车和小车四个部分，均由起重专用的___系列电动机来拖动。
【填空题】
105.>在桥式起重机中，电动机过载保护元件应采用___。
【填空题】
106.>X62W型铣床主轴电机的制动方式是___制动。
【填空题】
107.>X62W型铣床当主轴电机转速高于100r/min时，速度继电器的常开触头闭和，为电动机的___作好准备。
【填空题】
108.>X62W型铣床主轴变速时应先把变速手柄向___压，然后再拉到前面。
【填空题】
109.>X62W型铣床主轴变速时主轴电机瞬时反转一下，这是为了便于变速后___。
【填空题】
110.>X62W型铣床工作台的快速进给运动是___控制方式。
【填空题】
111.>X62W型铣床要求主轴制动以后方可换铣刀，换铣刀时控制电路应___。
【填空题】
112.>为防止事故发生，X62W型铣床要求工作台进给电动机只有在___后方可启动。
【填空题】
113.>X62W型铣床进给电动机正反转频繁，宜采用___控制换向。
【填空题】
114.>T68型镗床主轴点动时主轴电动机是___形接法。
【填空题】
115.>T68型镗床主轴低速运转时，主轴电动机是___形接法，同步转速是1500r/min。
【填空题】
116.>T68型镗床主轴高速运转时，主轴电动机四极，是双星形接法，同步转速是___r/min。
【填空题】
117.>保证安全的技术措施：停电、___、装设接地线、悬挂标示牌和装设遮拦。
【填空题】
118.>电气控制系统图分为___、电气元件布置图和电气安装接线图三类。
【填空题】
119.>电击是指___流入人体是对人体内部造成的生理机能的伤害。
【填空题】
120.>C650卧式车床的三台电机为主轴电机、冷却泵电机和___电机。
【填空题】
121.>Z3040摇臂钻床四台电机为主轴电机、冷却泵电机、液压泵电机和___电机。
【填空题】
122.>车床控制中，快速移动控制采用___控制。
【填空题】
123.>测量绝缘电阻的仪器是兆欧表，根据被测得部件的额定电压不同，其电压分别为250V、500V、1000V和___V。
【填空题】
124.>感生电流的方向永远和感生电动势的方向___。
【填空题】
125.>自感电流的方向总是与外电流的方向___。
【填空题】
126.>TTL集成电路，多余的输入端悬空时，相当于接___电平。
【填空题】
127.>稳压二极管的三个主要参数是稳定电压、稳定电流和___。
【填空题】
128.>单相半波整流电路的直流输出电压是交流电压值的___倍。
【填空题】
129.>F1系列可编程序控制器的OUT指令是驱动线圈指令，但它不能驱动___。
【填空题】
130.>Y系列交流电机的绝缘等级为___级。
