【单选题】
Although they plant trees in this area every year, the tops of some hills are still _________.___
A. blank             
B. hollow   
C. vacant           
D. bare
查看试卷,进入试卷练习
微信扫一扫,开始刷题
答案
D
解析
暂无解析
相关试题
【单选题】
Being a pop star can be quite a hard life, with a lot of traveling ________ heavy schedules.
A. with regard to      
B. as to     
C. in relation to       
D. owing to
【单选题】
Tony is very disappointed _______ the results of the exam.
A. with             
B. for     
C. toward         
D. on
【单选题】
William Penn, the founder of Pennsylvania, _________ defended the right of every citizen to freedom of choice in religion.
A. peculiarly        
B. indifferently 
C. vigorously       
D. inevitably
【单选题】
 When people become unemployed, it is _______ which is often worse than lack of wages.___
A. laziness         
B. poverty   
C. idleness       
D. inability
【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
【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
推荐试题
【填空题】
21005.___高速磨削加工特点是尽可能地提高切削速度、既可以用于精加工又可以用于粗加
【填空题】
21006.___超精密加工的支撑环境要求净化的空气环境、较好的抗震动干扰环境、恒定的稳
【填空题】
21007.___超精密加工包括了所有能使零件成形、位置和尺寸精度到微米和亚微米范围的机械加工方法。
【填空题】
21008.___激光束、离子束、电子束均可对工件表面进行改性。
【填空题】
21009.___超高速切削加工有色金属时,通常采用金刚石砂轮进行磨削。
【填空题】
21010.___超高速机床要求主轴的转速很高,但进给速度不需要提高。
【填空题】
21011.___人造金刚石是目前为止第二硬的刀具材料。
【填空题】
21012.___立方氮化硼是一种超硬材料,其硬度略低于人造金刚石,但不能以正常的切削速度切削淬火等硬度较高的材料。
【填空题】
21013.___涂层常用于硬质合金刀具,而不能用于高速钢刀具。
【填空题】
21014.___实践证明,涂层刀片在高速切削钢件和铸铁时能获得良好效果,比未涂层刀片的刀具寿命提高 1~3 倍,高者可达 5~10 倍。
【填空题】
21015.___工艺系统的热变形不仅影响加工精度,而且影响生产效率,为了保证加工要求必须使机床热平衡后再加工,使刀具热伸长后再调刀,使工件冷却后再测量及精加工。
【填空题】
21016.___高速切削是采用高转速、快进给、小被吃刀量和小进给量来去除材料的一种加工方式。
【填空题】
21017.___定义高速切削的依据是切削速度。
【填空题】
21018.___在高速切削加工范围,随着切削速度的提高,切削力减少。
【填空题】
21019.___超声波加工可用于不导电的非金属材料的加工。
【填空题】
21020.___快速成形加工工艺可分为两大类:基于激光或其他光源的成形技术和基于喷射的成形技术。
【填空题】
21021.___高速切削加工的刀柄多采用过定位,即刀柄和主轴的锥面及端面同时接触。这样可以提高刀具系统的动、静刚度,并且动平衡性好。
【填空题】
21022.___基准统一原则是指在不同工序过程中始终采用同一基准。
【填空题】
21023.___粗加工时,前角应取较大值,而精加工时,前角应取较小值。
【填空题】
21024.___加工脆性材料刀具容易崩刃。
【填空题】
21025.___摩擦离合器不仅能平稳地接合和分离,而且具有过载保护作用。
【填空题】
21026.___残留面积高度与刀具的主、副偏角、刀尖圆弧半径和进给量有关。
【填空题】
21027.___切削力来源于克服切屑对前刀面的摩擦力和刀具后刀面对过渡表面与已加工表面之间的摩擦力。
【填空题】
21028.___数控刀具应具有较高的耐用度和刚度、良好的材料热脆性、良好的断屑性能、可
【填空题】
21029.___攻螺纹应在工件的孔口倒角,套螺纹应在工件的端部倒角。
【填空题】
21030.___斜二等轴测图的画法与正等轴测图的画法基本相同,只是它们的轴间角和轴变形系数不同。
【填空题】
21031.___当两形体邻接表面相切时,由于相切是光滑过渡,所以切线的投影不画。
【填空题】
21032.___标注的尺寸不是定位尺寸就是定形尺寸。
【填空题】
21033.___闭环控制数控系统的控制精度___高于开环控制数控系统的控制精度。
【填空题】
21034.___在剖视图中,切根线用细实线绘制。
【填空题】
21035.___尺寸标注不应封闭。
【填空题】
21036.___非回转体类零件的主视图一般应选择工作位置。
【填空题】
21037.___表达一个零件,必须画出主视图,其余视图和图形按需选用。
【填空题】
21038.___铸造零件应当壁厚均匀。
【填空题】
21039.___上下偏差和公差都可以为正,为负和为 0。
【填空题】
21040.___线段平行于投影面,其投影反映实形或实长,这种性质称为直线的类似性。
【填空题】
21041.___空间两直线的相对位置只有两种:平行、相交。
【填空题】
21042.___基本视图有主视图、俯视图、左视图、右视图、仰视图和后视图六个。
【填空题】
21043.___将机件的某一部分向基本投影面投射所得的视图,称为局部视图。
【填空题】
21044.___局部视图的断裂边界应以细波浪线表示,当所表示的局部视图是完整的,且外轮廓线又成封闭时,波浪线可省略不画。