英语四级选词填空技能与历年真题

英语四级选词填空技能与历年真题
英语四级选词填空技能与历年真题

1. 预览选项,了解词义并把选项分为四大类词性:名词n ,动词v ,形容词a ,副词ad ,在每个选项后作词性

的简要标记;

2. 精读全文开头,把握文章主题,并以三个空或一个段落为一个单位,利用前后文判断每空的词性;

3. 把对应词性的选项逐一带回原文,含义通顺,时态、主谓搭配一致的为正确选项。

四级考试的常用后缀在判断选项词性时可以有一定帮助作用:

常见名词后缀:

-sion ,-tion ,如:starvation ,attraction ,profession -ity ,如:quality ,diversity 常见动词后缀:

-ate ,如:estimate ,generate -en ,如:widen ,worsen 常见形容词后缀:

-able ,如:stable ,affordable -tive ,-sive ,如:destructive ,excessive ,sensitive -ous ,如:unconscious ,enormous

常见副词后缀:

-ly ,如:deliberately ,completely ,remarkably ,

在根据前后文判断每空的词性时,一些经常考察的形式如下:名词:

通常来说,冠词(如a ,an ,the )、形容词、介词后面搭配名词,即“a/an/the/adj./prep. + n.”,举例说

明:

Education soon became a _____. 冠词a 后面加可数名词的单数形式,正确答案是nightmare ,这句话

的意思是“教育很快成了一种噩梦。”

As the trade winds lessen in _____, the ocean temperatures rise causing the Peru current

flowing in from the east to warm up by as much as 5 degrees. (06-6) 介词in 后面加名词,正确答

案是strength ,这句话的意思是“当信风强度减弱的时候,海洋温度上升,导致从东部流入的秘鲁洋流上升了

5摄氏度之 多。”、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

较难的一个例子:Husbands and children now do some of these jobs, a ____ that has changed the target market for many products. (06-12) 这里可以用两种判断方法来判断横线处所填词的词性。第一种方法,用句子结构来判断,前面一句话,husbands and children now do some of these jobs ,这是一个完整的句子,主语husbands and children ,谓语动词do ,宾语some of these jobs ;后面的that 引导的是一个同位语从句,它所修饰的中心词就是a 后面需要填的词,而定语从句的中心词是名词,所以横线处应填一个名词。第二种方 法,根据刚才所说的“a + 名词”的语法规则来判断,横线处应该填一个名词,而且是一个可数名词的单数形式。正确答案是situation 。这句话的意思是“丈夫和孩子现在也做一些 这样的工作了,这种情况就改变了许多产品的目标市场。”动词:

动词的考点很多,我们来看其中三种:1. 主语后缺谓语动词。 举例说明:

He ____ from his teachers, came home in tears and thought about dropping out. 在这句话里,主语是he ,本来后面应该有一个动词作谓语,但是这里没有动词,而是在横线后面出现了一个介词短语from his teachers ,这样这句话就缺少谓语动词,所以横线上应该填一个动词。正确答案是hid ,这句话的意思是“他不愿见老师,哭着回家,想要退学。”

That’s why a growing number of hospitals now depend upon physicians who ___ in pain medicine. (07-6) 在这句话里,who___ in pain medicine 是physicians 的定语从句,这个定语从句的主语是who ,后面也没有跟动词作谓语,而是直接出现了一个介词短语in pain medicine ,因此横线上应该填一个动词,而physicians 是复数,这就决定了who 也是复数,这样横线所填的动词应该与主语性数搭配一致。正 确答案是specialize ,这句话的意思是“这就是为什么,越来越多的医院现在都依赖上了止痛药配给专家。”2. 当出现“一个完整的句子 + ,____ + 名词/介词”的结构时,逗号后边的部分是伴随状语,表示伴随状态或者表示原因,应当填动词加ing 形式或动词加ed 形式。当这个动词与句子主语是主动关 系,填动词加ing 形式,当两者是被动关系,填动词加ed 形式。举例说明:

The rainfall is increased across South America, ___ floods to Peru. (06-6) 根据独立主格结构原则,应该填动词ing 或动词ed ,选项中只有bringing 符合要求。从意思来看,bring“带来”与rainfall“降雨”之 间是主动关系,即“the rainfall brings floods”,所以用bringing 无论从意思上还是结构上都符合要求。3. 横线处如果填谓语动词,往往与上下半句的谓语动词时态一致。举例说明:

In particular, when older patients ___ of pain, they were told it was a natural part of aging and they would have to learn to live with it. (07-6) 上半句when 的从句里有主语patients 但没有谓语,因此横线处填谓语动词。下半句的谓语动词为were 和would 都是一般过去时,因此横线里填 一个一般过去时的谓语动词。正确答案是complained 。

、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

形容词:

当出现“a/the/the most/more +___+名词”的结构时,横线处通常填形容词举例说明:

The 1982-83 EI Nino brought the most _____ weather in modern history. (06-6) the most 后面加形容词,表示形容词的最高级。正确答案是destructive 。副词:

1. 当一句话完整的时候,句尾的空往往是副词。举例说明:

Today, we lake pain _____. (07-6)这句话有主语we ,谓语lake ,宾语pain ,表达完整的意思,句尾判断应该填副词。正确答案是seriously 。

2. 当一句话出现“主语 + ___ + 谓语”的情况时,横线处通常填副词。举例说明:

In Arizona and Texas, bilingual students ____ outperform their peers in monolingual programs.主语是students ,谓语是outperform ,两者之间通常填副词。正确答案是consistently 。记背选词填空选项的重点范围:1. 历年曾经考过的复合式听写的单词

2. 历年曾经考过的完形填空的选项,仔细阅读态度题的选项

3. 历年曾经考过的真题2010.6

When we think of green buildings, we tend to think of new ones – the kind of high-

tech, solar-

paneled masterpieces that make the covers of architecture magazines. But the U.S. has m ore than 100 million existing homes, and it would be __47__ wasteful to tear them all dow n and __48__ them with greener versions. An enormous amount of energy and resources went into the construction of those houses. And it would take an average of 65 years for th e __49__ carbon emissions from a new energy-efficient home to make up for the resources lost by destroying an old one. So in the broad est __50__, the greenest home is the one that has already been built. But at the same tim e, nearly half of U. S. carbon emissions come from heating, cooling and __51__ our homes, offices and other buildings. "You can't deal with climate change without dealing with existin g buildings," says Richard Moe, the president of the National Trust.

、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

With some __52__, the oldest homes tend to be the least energy-efficient. Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that __53__ over time and let in more outside air.

Fortunately, there are a __54__ number of relatively simple changes that can green older homes, from __55__ ones like Lincoln's Cottage to your own postwar home. And efficienc yupgrades (升级)

can save more than just the earth; they can help __56__ property owners from rising pow er costs.

A) accommodations B) clumsy C) doubtful D) exceptions E) expand F) historic G) incredibly H) powering I) protect J) reduced K) replace L) sense M) shifted N) su

pplying O) vase 2010.12

What determines the kind of person you are? What factors make you more or less bold, int elligent, or able to read a map? All of these are influenced by the interaction of your genes and the environment in which you were 47 . The study of how genes and environment inte ract to influence 48 activity is known as behavioral genetics. Behavioral genetics has made important 49 to the biological revolution, providing information about the extent to which biology influences mind, brain and behavior.

Any research that suggests that 50 to perform certain behaviors are based in biology is c ontroversial. Who wants to be told that there are limitations to what you can 51 based on s omething that is beyond your control, such as your genes? It is easy to accept that genes control physical characteristics such as sex, race and eye color. But can genes also determi ne whether people will get divorced, how 52

they are, or what career they are likely to choose? A concern of psychological scientists is the 53 to which all of these characteristics are influenced by nature and nurture(育), by genetic makeup and the environment.

Increasingly, science 54 that genes lay the groundwork for many human traits. From this p erspective, people are born 55 like undeveloped photographs: The image is already captur ed, but the way it 56 appears can vary based on the development process. However, the b asic picture is there from the beginning.

[A] abilities [I] extent [B] achieve [J] indicates [C] appeal [K] proceeds

[D] complaints [L] psychological [E] contributions [M] raised [F] displayed [N] smart [G] essentially [O] standard [H] eventually 2011.6

The popular notion that older people need less sleep than younger adults is a myth, scienti sts said yesterday.

、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

While elderly people 47 to sleep for fewer hours than they did when they were young er, this has a(n) 48 effect on their brain's performance and they would benefit from gett ing more, according to research.

Sean Drummond, a psychiatrist (心理医生

at the University of California, San Diego, said thatolder people are more likely to suffer fro m broken sleep, while younger people are better at sleeping 49 straight through the nig ht.

More sleep in old age, however, is 50 with better health, and most older people woul

d feel better and mor

e 51 i

f they slept for longer periods, he said. "The ability to sleep in one chunk (整块时间)

overnight goes down as we age but the amount of sleep we need to 52 well does not c hange," Dr Drummond told the American Association for the Advancement of Science conf erence in San Diego.

"It's 53 a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were 54 . Our data suggests that older adul ts would benefit from 55 to get as much sleep as they did in their 30s. That's 56 fro m person to person, but the amount of sleep we had at 35 is probably the same amount w e need at 75."

A) alert B) associated C) attracting D) cling E) continuing F) definitely G) different H) efficiently I) formally J) function K) mixed L) negative M) sufficient N) tend O) younger 2011.12

With the world’s population estimated to grow from six to nine billion by 2050, researchers, businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure an jobs. Underlying all this 47________ will be the demand for energy, which is expected to double over the next 40 years. Finding the resources to meet this demand in a 48________, sustainable way is the corner stone of our nation’s energy security, and will be one of the major 49________ of the 21st century. Alternative forms of energy --- bio-fuels, wind and solar, to name a few --- are50________ being funded and developed, and will play a growing 51________ in the world’s energy supply. But experts say that, even when 52________, alternative energy s ources will likely meet only about 30% of the world’s energy needs by 2050.

For example, even with 53________ investments, such as the $93 million for wind energy development 54________ in the American Recovery and Reinvestment Act, important alte rnative energy sources such as wind and bio-fuels 55________ only about 1% of the market today. Energy and sustainability experts s

、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

ay the answer to our future energy needs will likely come from a lot of 56________ --- both traditional and alternative.

A .stable B. solutions C .significant D .role E .progress F .marvelous G .included H

.growth I .exactly J .consist K .comprise L .competitions M combined N challenges O .c ertainly 2012.6

With the world's population estimated to grow from six to nine billion by 2050, researchers. businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure (基础设施)

and jobs. Underling all this 47 will be the demand for energy, which is expected to double over the next 40 years.

Finding the resources to meet this demand in a 48 . sustainable way is the cornerstone (基石)

of our nation's energy security, and will be one of the major 49 of the 21st century. Alt ernative forms of energy- bio-fuels, wind and solar, to name a few are 50 being funded and developed, and will play a growing 51 in the world's energy supply. But experts say that even when52 , alternativ e energy sources will likely meet only about 30% of the world's energy needs by 2050. For example, even with 53 investments, such as the $93 million for wind energy develo pment 54 in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels 55 only about 1% of the market today.

Energy and sustainability experts say the answer to our future energy needs will likely co me from a lot of 56 both traditional and alternative.

A)stable I)exactly B)solutions J)consist C)significant K)comprise D)role L)competitions E)progress M)combined F)marvelous N)challenges G)i ncluded O)certainly H)growth

、管路敷设技术通过管线不仅可以解决吊顶层配置不规范高中资料试卷问题,而且可保障各类管路习题到位。在管路敷设过程中,要加强看护关于管路高中资料试卷连接管口处理高中资料试卷弯扁度固定盒位置保护层防腐跨接地线弯曲半径标等,要求技术交底。管线敷设技术中包含线槽、管架等多项方式,为解决高中语文电气课件中管壁薄、接口不严等问题,合理利用管线敷设技术。线缆敷设原则:在分线盒处,当不同电压回路交叉时,应采用金属隔板进行隔开处理;同一线槽内强电回路须同时切断习题电源,线缆敷设完毕,要进行检查和检测处理。、电气课件中调试对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行

高中资料试卷调整试验;通电检查所有设备高中资料试卷相互作用与相互关系,根据生产工艺高中资料试卷要求,对电气设备进行空载与带负荷下高中资料试卷调控试验;对设备进行调整使其在正常工况下与过度工作下都可以正常工作;对于继电保护进行整核对定值,审核与校对图纸,编写复杂设备与装置高中资料试卷调试方案,编写重要设备高中资料试卷试验方案以及系统启动方案;对整套启动过程中高中资料试卷电气设备进行调试工作并且进行过关运行高中资料试卷技术指导。对于调试过程中高中资料试卷技术问题,作为调试人员,需要在事前掌握图纸资料、设备制造厂家出具高中资料试卷试验报告与相关技术资料,并且了解现场设备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况

,然后根据规范与规程规定,制定设备调试高中资料试卷方案。

、电气设备调试高中资料试卷技术电力保护装置调试技术,电力保护高中资料试卷配置技术是指机组在进行继电保护高中资料试卷总体配置时,需要在最大限度内来确保机组高中资料试卷安全,并且尽可能地缩小故障高中资料试卷破坏范围,或者对某些异常高中资料试卷工况进行自动处理,尤其要避免错误高中资料试卷保护装置动作,并且拒绝动作,来避免不必要高中资料试卷突然停机。因此,电力高中资料试卷保护装置调试技术,要求电力保护装置做到准确灵活。对于差动保护装置高中资料试卷调试技术是指发电机一变压器组在发生内部故障时,需要进行外部电源高中资料试卷切除从而采用高中资料试卷主要保护装置。

大学英语四级阅读选词填空模拟题答案解析

第一篇 Climate change has claimed its latest victim:Limacina helicina,a planktonic,predatory(捕食的)sea snail that's a member of the taxonomic group more(36)__________ known as sea butterflies.(The name is(37)__________ from the wing-like lobes(叶瓣)the tiny creatures use to get around.)In a study(38)__________ published in joumal Proceedings of the Royal Society B,a group of scientists from the National Oceanic and Atmospheric Administration (NOAA)and Oregon State University have found that the Pacific Ocean's decreasing pH—its acidifying(酸化),in other words-is dissolving L.helicina's thin shells. The researchers collected sea butterfly(39)__________ from 13 sites along the Pacific coast(between Washington and southern California,going over each with a scanning electron microscope.More than half of the shells(53%)from onshore individuals(40)__________ signs of “severe dissolution damage,”while 24%of(41) __________ individuals suffered dissolution damage.The study's(42)__________ investigator, Dr. Nina Bednarsek of NOAA,described the affected L.helicina shells as having a texture not unlike “cauliflower” or “sandpaper.” According to the paper,there was a “strong positive(43)__________ ”between the proportion of sea butterflies with severe shell dissolution damage and “the percentage of undersaturated(未达到饱和的)water ” near the ocean's surface.The researchers conclude “shell dissolution owing to(human.caused ocean(44)_________has doubled in near shore habitats since pre.industrial conditions across this region and is on track to triple by 2050,”a truly(45)__________ prediction.Moreover, the broader implications for ecosystem are unclear, as damaged shells make it harder for L.helicina to fight infections,stay buoyant,and protect themselves from predators. I. noticed A. showed J. correlation B. recently K. encouraging? C. protected L. seaward D. commonly M. acidification E. derived N. grim F. samples O. pollution G. offshore H. principal 词性归类 答案解析

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选词填空特点: 1. 近义词辨析不多, 2. 固定搭配不多 3. 词性辨析比较容易 选词填空难点: 1. 词性可能会变。 2. 错一题,可能会错两题。 选词填空与完型填空的异同: 相同点:都要上下文做题 不同点:选词填空要先判断词性,而完型填空不用判断词性,4个待选项词性基本一致。 解题步骤 1)阅读选项,词性分类 仍然要“先题后文在定位”,但这里“先题”不是要找关键词,而是要先对15个选项“辨性” 仔细阅读选项,根据词性把每个单词进行分类归纳。如名词、动词、形容词、副词、介词、连词各有几个选项。动词归类要细分为v,ved, ving。因为一个空可以填动词,但填原形还是过去式还是ing形式要自己根据语法判断。 2)细读首句,抓住中心 首先要抓住文章首句,迅速找到文章的主题词或主题。和完型填空一样,一般文章第一句不设空格,以便让读者知道本文的相关主题词或主题。 3)瞻前顾后,谨慎选择 根据文章前后的语法关系判断应填入的词性,大大缩小选择范围。当一个空可以填入好几个相同词性的词时,则根据上下文逻辑意义;如果均能说得通时,要注意近义辨析。或留到最

后,等范围缩小到最小时再轻松收尾。即传统阅读所说的,首遍不行无所谓,文章看完再收尾。 解题技巧 1)首先要辨性(辨别词性) a. 不认识的单词看词缀(见后面附表) b. 认识的单词要注意词性的单一性和多样性 比如:must,most均可做名词do the most you can c. 动词归类要细分为v,ved, ving。因为一个空可以填动词,但填原形还是过去式还是ing 形式要自己根据语法判断。甚至动词分词形式还可以做定语。 2)一个单词有多个词性时,要在不同分类中都标出。 3)如果选项中出现一组近义词或反义词时,往往有一个是干扰选项,它注重考察的是词汇的精确理解,要求考生分析清楚其细微的区别。 4)如何判断原文空缺处所需单词的词性: ①动词: a)前后都是名词短语,中间一般为动词(时态看前后文)。 b) 一个句子有且只有一个谓语动词 c)一个完整的句子之后再跟逗号,后面一般是非谓语动词短语。 ②名词: a. 名词主要做主语、宾语。

2017英语四级选词填空技巧:确定空白处词性

2017英语四级选词填空技巧:确定空白处词性 ? 确定空白处词性 以下情况,空白处为动词: 1 n./pron. vt. n./pron. 前有名后有名,中间谓动 2 n./pron. vi. 前名后无名,谓动不及物 3 n./pron. vi. adv./prep.前名后介副,谓动不及物 4 n./pron. link v./be adj.前名后形容,be动或系动 5 to v. 前有to,后原型 注意:确定空白处为动词,还需根据上下文确定正确形式 以下情况,空白处为分词: 过去分词: 1has/have/had p.p(完成时态) 2be p.p(被动语态) 3p.p n.或 n. p.p(过去分词做形容词,表示被动或已发生) 现在分词: 1be -ing(进行时态) 2-ing n.或n.-ing(现在分词做形容词,表示主动或正在进行) 3prep. –ing(介词宾语) 以下情况,空白处为名词: (名词通常做主语或动词介词宾语) 1a/the n. 前有冠词 2n. V. 空白后为谓语动词 3prep. n. 空白前为介词,则空白处为名词或动名词 (注意:根据空白处前的冠词和上下文判断所填名词的单复数;根据空白处后的谓语动词的形式判断所填名词的单复数) 以下情况,空白处为形容词: 1adj. n. n. adj. 空白前后是名词 2adv. adj. 空白前是副词 3link v./be adj. be动或系动后考虑形容词做表语 以下情况,空白处为副词: 1adv. v.或 v. adv.副词修饰动词,表示程度状态 2adv. adj.副词可修饰形容词 3adv.从句,有些副词做句子的状语,表示转折因果等逻辑关系

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