【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. endangered
D. threatening
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相关试题
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. concept
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. evaluating
C. calculating
D. computing
【单选题】
When he opened the door, he used too much force and ___ the key.
A. trailed
B. varied
C. wicked
D. twisted
【单选题】
I’m very sorry to have ___ you with so many questions on such an occasion.
A. offended
B. impressive
C. bothered
D. interfered
【单选题】
It is sometimes difficult for young people from the countryside to ___ well to life in the big city.
A. suit
B. adapt
C. regulate
D. coordination
【单选题】
Our guide gave us a detailed ___of this painting but we still do not understand.
A. authority
B. interpretation
C. instruction
D. institution
【单选题】
If you want to ___ the wood, cut it with the grain, not against it.
A. break
B. burn
C. split
D. divide
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. conception
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. betting
C. calculating
D. computing
【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. danger
D. threatening
【单选题】
Workers should occasionally walk around, ___ and avoid prolonged periods at the desk.
A. pull
B. lengthen
C. strain
D. stretch
【单选题】
These companies often encounter many ___ impediments to investment.
A. invisible
B. edible
C. feasible
D. capable
【单选题】
Running a kitchen ___a great deal of discipline and speed.
A. including
B. involving
C. involves
D. composes
【单选题】
He had an ___ at a restaurant in Greek Street at eight.
A. engagement
B. engage
C. contract
D. promise
【单选题】
I think I would have died of ___.
A. embarrass
B. embarrassing
C. embarrassed
D. embarrassment
【单选题】
He saw the publication of this book as an embarrassing invasion of his ___.
A. secret
B. privacy
C. private
D. piracy
【单选题】
The trade imbalance is likely to rise again in 2020. ___ a new set of policy actions will be required soon.
A.
B. ecause B. Nevertheless
C. Hence
D. Therefore
【单选题】
Stratford police refuse to comment ___ whether anyone has been arrested.
A. about
B. on
C. at
D. with
【单选题】
The world will be different, and we will have to be prepared to ___ to the change.
A. adopt
B. adapt
C. accustom
D. adept
【单选题】
The company has launched a campaign of television ___ and leaflets.
A. commercials
B. commences
C. commerce
D. commercialization
【单选题】
The general secretary may ___ the president at official ceremonies.
A. present
B. represent
C. representative
D. stand
【单选题】
He ___ her arms behind her back and clipped a pair of handcuffs on her wrists.
A. dragged
B. pulled
C. stretched
D. twisted
【单选题】
Suppose that when I come back in ten years’ time all these old houses ___ down.
A. will have been pulled
B. will have pulled
C. will be pulling
D. will be pulled
【单选题】
The picture exhibition bored me to death. I wish I ___ to it.
A. have not gone
B. did not go
C. had not gone
D. should not have gone
【单选题】
An investigation was made into the accident ___ fifty people were killed.
A. for that
B. where
C. when
D. in which
【单选题】
___ with the picture, Mary tore it to pieces.
A. Dissatisfying thoroughly
B. Being thoroughly dissatisfied
C. To dissatisfy thoroughly
D. To be thoroughly dissatisfied
【单选题】
She was so angry that she felt like ___ something at him.
A. to throw
B. to have thrown
C. throwing
D. having thrown
【单选题】
If you want to know the train schedule, please ___ at the booking office.
A. acquire
B. inquire
C. request
D. require
【单选题】
My brother’s plans are very ___; he wants to master English, French and Spanish before he is sixteen.
A. arbitrary
B. aggressive
C. ambitious
D. abundant
【单选题】
Housewives who do not go out to work often feel they are not working to their full ___.
A. capacity
B. strength
C. length
D. possibility
【单选题】
Water and air are ___ to human beings. We cannot live without them.
A. harbor
B. function
C. definite
D. essential
【单选题】
Our challenge is to ___ those voters and inspire them to join our cause.
A. motion
B. motive
C. motivate
D. motivation
【单选题】
Harper was a teacher by ___.
A. career
B. occupation
C. profession
D. vocation
【单选题】
The doctor gave me a chest X-ray and ___some medicine for me.
A. prescribed
B. floated
C. drugged
D. drifted
【单选题】
The list is arranged according to the ___ professions of the audience.
A. resolution
B. responsible
C. resource
D. respective
【单选题】
The government is trying to do something to ___ better understanding between the two countries.
A. raise
B. promote
C. heighten
D. increase
【单选题】
According to the American federal government, residents of Hawaii have the longest life ___ : 77.2 years.
A. rank
B. span
C. scale
D. scope
【单选题】
Because of the boring ___, we need to take a vacation every year.
A. routine
B. surgery
C. rifle
D. sake
【单选题】
The manager spoke highly of such ___ as loyalty, courage and truthfulness shown by his employees.
A. virtues
B. features
C. properties
D. characteristics
【单选题】
Throughout his life, Henry Moore ___ an interest in encouraging art in the city of Leeds.
A. contained
B. secured
C. reserved
D. maintained
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【单选题】
站内其他线路作业，躲避本线列车时，下道距离不小于___m
【单选题】
机车运行中巡视机械间或走廊时要走稳把牢，开关车门时防止___。
【单选题】
在非正常情况下，机车乘务员要严格按照列车调度员命令升降弓，防止将电带入___。
【单选题】
严格执行电力、内燃机车人孔盖、爬梯等部位___规定。未办理登顶手续前，严禁登顶作业。
【单选题】
电气化铁路附近发生火灾时，必须立即通知车站值班员、列车（供电）调度员或___值班人员。
【单选题】
发现牵引供电设备断线及其部件损坏，或发现牵引供电设备上挂有线头、绳索、塑料布或脱落搭接等异物，均不得与之接触，应立即通知附近车站，在牵引供电设备检修人员到达未采取措施前，任何人员均应距已断线或异物处所___m以外。
【单选题】
冬季作业场所、通道、固定走行线及时清除冰雪并采取___措施。房檐（风雨棚）的冰挂做到及时清除。
【单选题】
遇雷雨天气时，禁止操作接触网隔离开关。严禁___操作隔离开关。
【单选题】
绝缘靴、绝缘手套等安全用品，应___进行一次绝缘耐压试验，并存放在阴凉干燥、防尘处所，使用前用干布擦拭，并进行外观检查，发现有漏气、裂损等现象禁止使用。
【单选题】
电气化区段在站内处理列车顶部故障，处置列车机车顶部突发事件前，有关车站（机车乘务员）必须向___报告。
A. 列车调度员
B. 接触网工区
C. 指导司机
【单选题】
机车乘务员在列车站停或区间停车下车检查机车走行部或处理故障时，必须密切注意邻线过往列车，遇邻线列车通过时，不准在列车的___作业、行走或停留。
【单选题】
禁止___检查处理故障或接触高压带电部件。
【单选题】
需进入高压室或变压器室处理故障前，必须双人确认___，拔下电源钥匙并随身携带后，方准进入。
A. 人员齐全
B. 调度命令
C. 受电弓已降下，主断路器已断开
【单选题】
电力机车运行中发生故障需要登机车顶部检查弓网状态或处理故障时，乘务员应断开主断路器，降下受电弓，向车站值班员、供电调度员申请办理___，接到停电命令后，穿戴好防护用具、验电和挂好接地线，方准进行。
【判断题】
严禁班前、班中饮酒；严禁脱岗、串岗，但有事可以私自替班或换班。
【判断题】
电气化区段严禁攀登机车、动车、各种车辆顶部或车辆装载的货物上。
【判断题】
必须检查确认车上车下无人员作业、无防护标志并呼唤后方准启机。
【判断题】
运行中不得向外抛扔杂物、抛撒火种，只在司机室、机械间准许吸烟。
【判断题】
机车在机务段（折返车间）无接触网、无电区进行整备作业，机车顶部作业完毕并确认车顶无人和遗留物件后，在有电区对车顶天窗及登顶通道加锁。
【判断题】
作业人员下道避车时160km/h 限速线路，距钢轨头部外侧距离不小于2.5米。
【判断题】
各类罐车在电气化铁路区段发生泄漏时，严禁登上车顶处理。必须将其牵到前方站处理。
【判断题】
必须熟知生产场所的设备、环境、危险因素、作业方法及防范措施。
【判断题】
隔离开关开闭作业时，必须执行本人操作本人监护制度。
【判断题】
在电气化区段，接触网的各导线及其相连部件，通常均带有高压电，因此禁止直接或间接通过任何物件(如导线、水流、棒条)与上述设备接触。
【判断题】
遇应急救援抢险和进入电气化铁路区域等特殊情况下，分配工作的领导或管理、指挥人员，必须向其传达或讲明有关的安全注意事项。
【判断题】
自接触网设备第一次受电开始，在未办理停电接地手续之前，所有人员均须按无电对待。
【判断题】
使用单面梯子作业时，必须设专人扶梯并做好防滑措施，不得两人同时站在同一梯子上，梯子与地面须保持60-70°间。
【判断题】
出、退勤同班人员须走固定路线，联防同行，相互提示，不得侵限。
【判断题】
动车前，必须确认车组人员到齐和车上车下无作业人员，先动车后鸣笛，人不全不动车，车不停稳不上下。
【判断题】
发生事故时，立即组织抢救，保护现场，及时如实上报。按“四不放过”的原则调查处理。
【判断题】
遇大雨、大雾等恶劣天气时，禁止上道清扫作业，除雪保畅通或处理临时故障必须设好防护。
【判断题】
在接触网及带电体10m范围内，使用发电机、空压机、搅拌机等机电设备时，应有良好的接地装置。
【判断题】
机械设备发生故障时，必须先停机断电挂警示牌后再处理。
【判断题】
在电气化区段运行的机车、动车、固定配属的车辆及自轮运转设备可以攀登到车顶或作业平台的梯子、天窗等处所，均应有“电气化区段严禁攀登”的警告标志。
【判断题】
人员下道避车时应面向列车认真瞭望，防止列车上的抛落、坠落物或绳索伤人。
【判断题】
禁止在升起的吊臂和吊起的物件下通过、作业。
