专业英语四级语法与词汇模拟题26

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专业四级词汇与语法全真模拟练习21-30

大家网1/6专业四级词汇与语法全真模拟练习211．He’s__ as a “bellyacher”—he’s always complaining about something.A who is knownB whom is knownC what is knownD which is known2. Your advice would be __ valuable to him, who is now at a loss as to what to do first.A exceedinglyB excessivelyC extensivelyD exclusively3. More often than not it is difficult to __ the exact meaning of a Chinese idiom in English,A exchangeB transferC conveyD convert4. The scientists have absolute freedom as to what research they think is best to __.A engageB devoteC seekD pursue5. The local authorities realized the need to make __ for elderly people in their production efficiency.A preparationB requirementC specificationD provision答案：答案1-5 CACDD1．选C，“what is called..”, what we call…, what is known as… 放在名词和名词性词组之前，表“所谓的”。

What were called radicals were involved in leading the general strike.2．选A exceedingly极度地，非常地I’m exceedingly pleased to meet you.Excessively 过度，过分地（贬）Don’t drink excessively.Extensively 广泛地，广阔地You should read extensively in order to enlarge your vocabulary.Exclusively 唯一地，只He’s exclusively employed on repairing cars.3. 选C convey传达，传递This picture will convey to you some idea of the beauty of the scenery.Convert改变，转变The room was converted from a kitchen to a drawing room.4．选D pursue从事（工作，研究等）Students showed great enthusiasm in pursuing the new learning.5. 选D provision准备，预备（强调“未雨绸缪”）They spent all their money and made no provision for the future.专业四级词汇与语法全真模拟练习221．If your car__ any attention during the first 12 months, take it to an authorized dealer.A shall needB should needC would needD will need2. His strong sense of humor was__ make everyone in the room burst out laughing.A so as toB such as toC so thatD such thta3. The discovery of new oil-fields in various parts of the country filled the government with __ hope.A eternalB infiniteC ceaselessD everlasting4. It was as a physician that he represented himself, and__ he was warmly received.A as suchB such asC as thatD so that5. In international matches, prestige is so important that the only thing that matters is to avoid__.A from being takenB being takenC beatingD to be beatenKey 1-5 BBBAB1. 选B. should 用在条件句中，可表虚拟语气，意为“万一”，强调该条件不大可能2. 选B such as to 后跟不定式，引出结果状语，作“如此……以至……”The problem is such as to interest only a few people.3. 选B。

英语专业四级词汇和语法模拟试题

英语专业四级词汇与语法模拟练习全真模拟试题练习一1.____in the past, at the moment it is a favorite choice for wedding gown.A. Unpopular has as white beenB. White has been as unpopularC. Unpopular has been as whiteD. Unpopular as white has been2.____for a long time, the fields are all dried up.A. There has been no rainB. Having no rainC. There having been no rainD. There being no rain3. The millions of calculations involved, ____by hand, would have lost all practical value by the time they were finished.A. had they been doneB. they had been doneC. having been doneD. they were done4. Televisions enable us to see things happen almost at the exact moment____.A. which they are happeningB. they are happeningC. which they happenD. they have happened5.____me most was that the young boy who had lost both arms in an accident couldhandle a pen with his feet.A. That amazedB. It amazedC. Which amazedD. Whatamazed6. Although she wrote a lot of short stories and poems when she was very young,____she was twenty five.A. her first real success did not come untilB. her real first success came until notC. since her first real success did not come untilD. not until her first real success7. You should know better than____ your little sister at home by herself.A. to leaveB. leavingC. to have leftD. left8. As the train will not leave until one hour later, we ____grab a bite at the snack bar.A. may wellB. just as wellC. might as wellD. aswell9. She resorted to ____ when she had no money to buy foods for her children.A. have stolenB. stealC. stoleD. stealing10. The boy has admitted to ____ the window while playing football yesterday.A. breakingB. having been brokenC. breakD. be breaking11. Betty advised me to label our luggage carefully in case it gets ____in transit.A. misusedB. mishandledC. mistakenD. mislaid12.____money, she is quite rich. However, this does not mean that she is happy.A. ConcerningB. As toC. In terms ofD. In the light of13. A well written composition ____good choice of words and clear organization among other things.A. calls forB. calls onC. calls upD. calls off14. It is ____with the customer not to let the shop assistants guess what she reallylikes and wants until the last moment.A. in her honorB. on her honorC. a point of honorD. an honor15. This house will probably come on the ____next month.A. fairB. marketC. shopD. store16. George was introduced to ____activities at a young age, when she was hire to actas a lookout for drugdealers.A. illegalB. lawfulC. faithfulD. peaceful17. An institution that properly carries the name university is a more comprehensiveand complex institution than any other kind of higher education____.A. settlementB. establishmentC. costructionD. structure18. People’s status in society is frequently ____by how much they own.A. measuredB. examinedC. testedD. questioned19. Jack is so ____to his appearance that he never has his clothes pressed.A. adverseB. anonymousC. indifferentD. casual20. There is an increasing ____to make movies describing violence.A. strengthB. directionC. traditionD. trend21. Outside my office window there is a fire ____ on the right.A. escapeB. ladderC. stepsD. stairs22. I ____with the Browns during my stay in New York City.A. put inB. put downC. put onD. put up23. Operations which left patients ____ and in need of long periods of discovery timenow leave them feeling relaxed and comfortable.A. exhaustedB. unhealthyC. upsetD. fearful24. Farmers are allowed to grow small gardens of their own and they sell theirvegetables ____ the black market.A. onB. atC. inD. for25. The electric fan does not work because of the ____of service.A. pauseB. breakC. interruptionD. breakdown试题答案与解析1. D) 【句意】虽然白色过去不受欢迎，但目前它是婚纱的首选颜色。

2020年大学英语四级词汇和语法全真模拟试题及答案(共七套)

2020年大学英语四级词汇和语法全真模拟试题及答案（共七套）2020年大学英语四级词汇和语法全真模拟试题及答案（一）41. He ____have been nervous because he didn’t go straight in.A. ought toB. mustC. shouldD. had to42. I am quite sure that I can ____ Michael into letting us use his car tomorrow.A. speakB. talkC. tellD. say43. Jean could be a very attractive girl but she____to her cloth es. A. pays no attentionB. was paying no attentionC. paid no attentionD. had paid no attention44. When questioned by the interviewer, my mind went____, and I couldhardly remember my own date of birth.A. blankB. dimC. faintD. vain45. The textbook question as well as other issues is going to be discussed when the congress is in____again next spring.A. assemblyB. conventionC. conferenceD. session46. To drive a car safely, it is____good brakes.A. essential withB. essential havingC. essential to haveD. essential have47. As I regard it, you can widen the ____ of these improvements through your active participation.A. volumeB. dimensionC. magnitudeD. scope48. “Can you ride a horse?”“No, I never had the chance ____.”A. for learningB. for learning howC. how to learn itD. to learn how49. As electric lines were destroyed by the storm, they were forced to[CD#4] light for several days.A. go overB. go in forC. go withoutD. go out50. To survive in the intense market competition, we must____the qualities and varieties of products we make to the world-market demand.A. improveB. guaranteeC. gearD. enhance51. “Maria has blisters in her boots.”“She____walking such a long distance.”A. was used not toB. used toC. is not used toD. did not used to52. In ancient times people who were thought to have the ability to ____dreams were likely to be highly respected.A. impartB. inheritC. interpretD. intervene53. It was ____that we felt tired when we arrived.A. a so long travelB. such a long travelC. such a long journeyD. such a so long journey54.____his poor record in school, the board thinks that he should study hard.A. In spite ofB. In charge ofC. In view ofD. In case of55. “What authors do you like?”“Shakespeare is____.”A. favorite for meB. my favoriteC. for me the favoriteD. the favorite of mine56. We hadn’t expected a power cut so we were astonished when the whole house was ____into darkness.A. divedB. plungedC. drownedD. dropped57. Without a (an)____passport a tourist is forbidden to enter a country. A. operative B. effectiveC. validD. efficient58. Although the town had been attacked by the storm several times,____was done.A. a few damagesB. few damagesC. little damageD. a little damage59. Before the tourists set off, they spent much time setting a limit ____the expenses of the trip.A. forB. inC. toD. about60. “Tina looks especially pretty tonight.”“Yes, she always looks her best in ____of that color.”A. dressB. a dressC. that dressD. the dress61. Despite the wide range of reading material specially written or ____forlanguage learning purposes, there is yet no comprehensive systematic program for the reading skills.A. appointedB. assembledC. acknowledgedD. adapted62. Internet, a____of millions of computers linked world wide, is the largest system serving e-mail messengers.A. unityB. connectionC. networkD. combination63. “ How dark your brother’s hair is!”“It’s ____mine when I was at his age.”A. no darker thanB. no more darker asC. not dark more thanD. not darker as64. It was surprising that the hotel looked rather shabby outside was luxuriously and____ furnished inside.A. artificiallyB. arrogantlyC. arbitrarilyD. artistically65.____he daydreamed, Peter saw figures in the sky.A. UntilB. SinceC. WhileD. During参考答案41. 答案B【参考译文】他必定很紧张，因为他没有直接参加比赛。

专业英语四级(语法与词汇)模拟试卷202(题后含答案及解析)

专业英语四级（语法与词汇）模拟试卷202(题后含答案及解析) 题型有： 3. LANGUAGE KNOWLEDGEPART III LANGUAGE KNOWLEDGEThere are twenty sentences in this section. Beneath each sentence there are four words, phrases or statements marked [A], [B], [C] and [D]. Choose one word, phrase or statement that best completes the sentence.1．The sentence that expresses OFFER is______.A．Does she have your number?B．How can he get people to believe in him?C．I’ll get something to eat. What will you have?D．May I bring my chair next to yours?正确答案：C解析：句式理解题。

I’ll get something to eat．What will you have?意为“我要去买点吃的。

你想要什么?”表示提议，因此[C]为答案。

其他三个选项均表示询问，故排除。

知识模块：语法与词汇2．The qualities of my hometown, ______on me as a boy, had a profound effect on the philosophy that directed my career.A．having impressedB．impressedC．impressingD．to be impressed正确答案：B解析：非谓语动词用法题。

本句谓语动词为had，两个逗号之间的部分是主语的定语；根据impress sth．on／upon sb．(使某人铭记某事)的搭配，主语与impress之间构成动宾关系，故应用过去分词，所以本题应选[B]impressed。

英语专业四级词汇语法模拟选择题练习附答案

英语专业四级词汇语法模拟选择题练习附答案英语专业四级词汇语法模拟选择题练习附答案人的天才只是火花，要想使它成熊熊火焰，哪就只有学习!学习。

以下是店铺为大家搜索整理的英语专业四级词汇语法模拟选择题练习附答案，希望能给大家带来帮助!1. What seems confusing and fragmented at first might well become____a third time.A. notable and systematicB. clear and organicC. clean and measurableD. pure and wholesome2. They failed to pass the exam last time; I regretted ____.A. to be not able to helpB. being unable to helpC. being not able to helpingD. not be able to help3. At a press conference after the Oscar Award ceremony, the 18-year-old girl spoke in a barely____ voice.A. identicalB. legibleC. optionalD. audible4. All ____is a continuous supply of fuel oil.A. what is neededB. that is neededC. the thing neededD. for their needs5. Today dozens of scientific group in different countries have been____the goal of a practical and economic way to use sunlight to split water molecules.A. reachingB. winningC. chasingD. pursuing6. You said the books were on the desk, but ____there.A. there was no oneB. there were noneC. there were no onesD. was none7. Before the project was started, we asked the designer to give us an ____of the cost of building such a museum.A. estimateB. evaluationC. assessmentD. announcement8. From the top of the building, we can see thebridge____construction.A. byB. inC. underD. below9. “When did Gertrude finally get to the theatre?”“Just before the end of ____.”A. the act secondB. act secondC. Act TwoD. the act two10. Though he views himself as a realist, Michael says that his findings make him very ____about future.A. optimisticB. objectiveC. precautiousD. sympathetic11. “Have you flown very much?”“As a matter of fact, this trip is ____.”A. my firstB. the first to meC. the first one of mineD. my one to be the first12. In Boston, as in the rest of the United States, ____ schooling begins at age 5 and ends at 16.A. oblidgedB. compulsoryC. compellingD. forced13. “Let’s take a walk before we start to study.”“Oh, I think it’s ____ for walking.”A. much too hotB. very much hotC. too much heatD. very much heat14. China started its space industry only in recent years, and should ____ no time in catching up.A. delayB. lagC. lessenD. lose15. It’s quite late now and Mr. White____hasn’t left his office.A. stillB. alreadyC. sinceD. yet参考答案1. 答案 B【参考译文】一些初看既令人困惑又零零碎碎的事物经过再三思量会变得清晰而系统。

英语专业四级词汇与语法模拟练习解析

英语专业四级词汇与语法模拟练习全真模拟试题练习一1.____in the past, at the moment it is a favorite choice for wedding gown.A. Unpopular has as white beenB. White has been as unpopularC. Unpopular has been as whiteD. Unpopular as white has been2.____for a long time, the fields are all dried up.A. There has been no rainB. Having no rainC. There having been no rainD. There being no rain3. The millions of calculations involved, ____by hand, would have lost all practical value by the time they were finished.A. had they been doneB. they had been doneC. having been doneD. they were done4. Televisions enable us to see things happen almost at the exact moment____.A. which they are happeningB. they are happeningC. which they happenD. they have happened5.____me most was that the young boy who had lost both arms in an accident could handle a pen with his feet.A. That amazedB. It amazedC. Which amazedD. What amazed6. Although she wrote a lot of short stories and poems when she was very young, ____she was twenty five.A. her first real success did not come untilB. her real first success came until notC. since her first real success did not come untilD. not until her first real success7. You should know better than____ your little sister at home by herself.A. to leaveB. leavingC. to have leftD. left8. As the train will not leave until one hour later, we ____grab a bite at the snack bar.A. may wellB. just as wellC. might as wellD. as well9. She resorted to ____ when she had no money to buy foods for her children.A. have stolenB. stealC. stoleD. stealing10. The boy has admitted to ____ the window while playing football yesterday.A. breakingB. having been brokenC. breakD. be breaking11. Betty advised me to label our luggage carefully in case it gets ____in transit.A. misusedB. mishandledC. mistakenD. mislaid12.____money, she is quite rich. However, this does not mean that she is happy.A. ConcerningB. As toC. In terms ofD. In the light of13. A well written composition ____good choice of words and clear organization among other things.A. calls forB. calls onC. calls upD. calls off14. It is ____with the customer not to let the shop assistants g uess w hat she really likes and wants until the last moment.A. in her honorB. on her honorC. a point of honorD. an honor15. This house will probably come on the ____next month.A. fairB. marketC. shopD. store16. George was introduced to ____activities at a young age, when she was hire to act as a lookout for drugdealers.A. illegalB. lawfulC. faithfulD. peaceful17. An institution that properly carries the name university is a more comprehensive and complex institution than any other kind of higher education____.A. settlementB. establishmentC. costructionD. structure18. People’s status in society is frequently ____by how much they own.A. measuredB. examinedC. testedD. questioned19. Jack is so ____to his appearance that he never has his clothes pressed.A. adverseB. anonymousC. indifferentD. casual20. There is an increasing ____to make movies describing violence.A. strengthB. directionC. traditionD. trend21. Outside my office window there is a fire ____ on the right.A. escapeB. ladderC. stepsD. stairs22. I ____with the Browns during my stay in New York City.A. put inB. put downC. put onD. put up23. Operations which left patients ____ and in need of long periods of discovery time now leave them feeling relaxed and comfortable.A. exhaustedB. unhealthyC. upsetD. fearful24. Farmers are allowed to grow small gardens of their own and they sell their vegetables ____ the black market.A. onB. atC. inD. for25. The electric fan does not work because of the ____of service.A. pauseB. breakC. interruptionD. breakdown试题答案与解析1. D) 【句意】虽然白色过去不受欢迎，但目前它是婚纱的首选颜色。

[外语类试卷]专业英语四级(语法与词汇)模拟试卷246.doc

[外语类试卷]专业英语四级（语法与词汇）模拟试卷246一、PART III LANGUAGE KNOWLEDGEThere are twenty sentences in this section. Beneath each sentence there are four words, phrases or statements marked [A], [B], [C] and [D]. Choose one word, phrase or statement that best completes the sentence.1 _____ is not a serious disadvantage in life.（A）To be not good-looking（B）Not to be good-looking（C）Being not good-looking（D）Not being good-looking2 Which of the following sentences is grammatically INCORRECT?（A）Whether my brother succeed or fail, he will have my unwavering support. （B）Twelve minutes appear to be quite a long time to such an impatient man. （C）All the outdoor playing equipment has been removed from the park.（D）The foreign students each have a textbook and a dictionary.3 All you do now is _____ your homework.（A）complete（B）completing（C）having completed（D）to have completed4 _____ William? I knew he would win.（A）Thanks（B）Goodness knows（C）Thank goodness（D）Good old5 Although it seemed to take all her strength, the patient summoned up a smile to her mom. The underlined part means_____.（A）asked for a smile（B）pretended to smile（C）conjured up a picture of smiling（D）made a great effort to smile6 Soon after the accident happened, the vehicles involved were _____ away.（A）jerked（B）dragged（C）towed（D）draped7 During the famine, many people were reduced to going without food for days. The underlined part means（A）many people were brought to a condition under which they often starved.（B）the number of people decreased dramatically due to severe starvation.（C）a lot of people were forced not to eat anything for days.（D）many people were forced to leave due to the lack of food.8 The robot can be programmed to _____ a whole variety of tasks. （A）assign（B）tackle（C）realize（D）solve9 The team's efforts to score were _____ by the opposing goalkeeper. （A）frustrated（B）prevented（C）discouraged（D）accomplished10 I only know my neighbor by _____ but I have never spoken to her. （A）chance（B）heart（C）sight（D）experience11 Being colour-blind, Sally can't make a _____ between red and green.（A）difference（B）distinction（C）comparison（D）division12 You must insist that students give a truthful answer _____ with the reality of their world.（A）relevant（B）simultaneous（C）consistent（D）practical13 In order to raise money, Uncle George had to _____ with some of his most treasured antiques.（A）divide（B）separate（C）part（D）abandon14 The car was in good working _____ when I bought it a few months ago.（A）order（B）form（C）state（D）circumstance15 The customer expressed her distaste for that broad hat. The underlined part means（A）disapproval.（B）dislike.（C）dissatisfaction.（D）dismay.16 In order to repair barns, build fences, grow crops, and care for animals a farmer must indeed be（A）restless.（B）skilled.（C）strong.（D）versatile.17 Her expenditure on luxuries is rather high in _____ to her income.（A）comparison（B）proportion（C）association（D）calculation18 Although the old lady has become rich, she is still very _____ of her money.（B）thrifty（C）frugal（D）careful19 As my boss was away on a business trip, I was asked to _____ the daily staff meeting. （A）preside（B）introduce（C）chair（D）dominate20 The _____ of the word is unknown, but it is certainly not from Latin.（A）generation（B）descent（C）cause（D）origin21 Acute hearing helps most animals sense the approach of thunderstorms long before people _____.（A）do（B）hear（C）do them22 Which of the following underlined parts DOES NOT serve as an appositive? （A）We—have two children, a boy and a girl.（B）The young man died a hero in the war.（C）He's gotten a job tonight driving a truck.（D）We've none of us passed the exam.23 These areas have floods in some years, and _____.（A）drought in others（B）droughts are others（C）while other droughts（D）others in drought24 Do help yourself to some food, _____ you?（A）can't（B）don't（C）wouldn't（D）won't25 There _____ nothing more we want to buy, we left Korea for home one day earlier. （A）to be（B）to have been（C）being （D）be。

英语四级考试词汇语法模拟试题及答案参考

英语四级考试词汇语法模拟试题及答案参考英语四级考试词汇语法模拟试题及答案参考A man is not old as long as he is seeking something. A man is not old until regrets take the place of dreams.以下是店铺为大家搜索整理的英语四级考试词汇语法模拟试题及答案参考，希望能给大家带来帮助!1. In selecting a material, the engineer’s interest is in its propertieswhich determine how it will perform under the loads and condition____it is subject.A. whereB. whichC. in whichD. to which2. To meet the ever increasing demand____oil-refining equipment, the company will produce more of such equipment.A. ofB. onC. withD. for3. “The president made a brilliant decision, didn’t he ”“Yes, he did. I don’t know what I would have done if I____to make tha t decision.”A. wereB. had hadC. have hadD. had4. Animal mothers are devoted to their young and____ them with loveand discipline.A. mindB. watchC. helpD. tend5. The physicists propose that our attention____the use of special methods of thinking and acting.A. would be directed towardsB. should be directed towardsC. is directed towardsD. directs towards6. According to the acoustics, continual exposure____ noise of highintensity would lead to loss of hearing.A. ofB. withC. toD. by7. We are convinced____ the righteousness of our cause.A. ofB. onC. overD. at8. Urban congestion would greatly be relieved if the____charged onpublic transport were more reasonable.A. pricesB. ticketsC. feesD. fares9. You’d better let me know as soon as there is a(n)____position in thebranch office.A. emptyB. vacuumC. hollowD. vacant10. They will never reconcile themselves to____.A. defeatB. their defeatC. be defeatedD. have their defeat11. The matter is not to be ____.A. watched forB. waited onC. taken overD. trifled with12. The mother almost____when she learned that her son was shot dead.A. fell downB. came downC. fell apartD. went to pieces13. While doing calculation for the project, the designers____a new solution to a geological problem.A. fell intoB. stumbled uponC. set outD. discovered14. I meant____ you about it, but I forgot to do so.A. tellingB. having toldC. to tellD. to have told15. Everything____into consideration, I propose that the firstprize should be given to Liu Qiang.A. to takeB. takingC. takenD. took16. They____the park of late.A. will visitB. have visitedC. are visitingD. visited17. The girl was so ____by the mighty river that she would spend hours sitting on its bank and gazing at the boats and rafts going and coming.A. absorbedB. fascinatedC. movedD. touched18. After traveling in the desert for many days, they found a tiny oasis,where there was a well and ____green grass.A. a patch ofB. a bunch ofC. a pinch ofD. a packet of19. After a careful investigation, the committee decided to____the old hall. A. change B. build C. innovate D. renovate20. The fierce heat of this summer withered most of the crops____ his farm.A. inB. onC. ofD. from21. Since the father died a year ago, there has been ____in the family about the division of the estate.A. distinctionsB. discordC. disadvantagesD. disappointment22. Having been discussed, the proposal was____unanimously.A. adaptedB. adoptedC. admittedD. adjoined23. I’d just as soon you____ those important papers with you.A. don’t takeB. didn’t takeC. hadn’t takenD. were not taking24. The theme of the novel is that a person’s fate____that of the whole country.A. is closely linked up withB. is closely dealt withC. is closely taken asD. is closely tired up with25. The American professor came to realize that he hadunderestimated the____of most of the Chinese students.A. magnitudeB. gradientC. potentialD. firmness参考答案1. 答案 D【参考译文】在选择材料时，工程师感兴趣的是决定该材料在负荷及遭受某种状况时所表现的特性。

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专业英语四级语法与词汇模拟题26
单项选择题
1. But for the accident, we ______ the task much earlier.
A.should finish
B.should have finished
C.would finish
D.shall have finished
答案：B
[解答] 考查虚拟语气。

but for相当于without，if not for，意为“要不是”。

用but for开头的句子就相当于if引导的非真实条件句，故排除选项C与D。

对过去事情的虚拟，应该用完成时，故本题应该选B。

2. —When has the country been open to international trade?
—1960, I suppose.
A.Since
B.In
C.From
D.After
答案：A
[解答] 考查句子时态。

问句中用的是现在完成时态，when相当于下文的1978。

since+过去某一时间点常与现在完成时连用，故选A项。

3. Despite the wonderful acting and well-developed plot the ______ movie could not hold our attention.
A.three hours
B.three-hour
C.three hours'
D.three hour's
答案：B
[解答] 考查复合词作定语。

数词+量词构成的复合词作定语时，中间用连接符连接，量词用单数。

故B正确。

4. Careful surveys have indicated that as many as 50 percent of patients do not take drugs ______ directed.
A.like
B.so
C.which
D.as
答案：D
[解答] 考查连词的用法。

此处考查引导方式状语从句的连词，空格后面实际上是一个省略句，完整形式应该是they are directed。

由此可知该处缺少连词，意思应该是“以…方式”，故选as。

5. ______ the door when a gust of wind blew the candle out.
A.He had no sooner opened
B.Hardly had he opened
C.Scarcely did he opened
D.No sooner did he open
答案：B
[解答] 考查倒装句。

hardly/scarcely…when或no sooner…than为固定搭配，意为“一…就…”。

含有此结构的句子，表示从句中的动作一发生，主句中的动作随即发生，并且当hardly/scarcely或no sooner置于句首时，从句的主语和谓语必须倒装；另外，在以上结构中，主句一般用过去完成时，从句一般用一般过去时。

由此可知正确答案为B。

6. The old tower must be saved, ______ the cost.
A.however
B.whatever
C.whichever
D.wherever
答案：B
[解答] 考查状语从句连接词及省略。

whoever引导让步状语从句，表示“不管…是什么(怎样)”；从句的有些成分有时可以省略，此处就省略了谓语be动词，其完整形式应为Whatever the cost is。

故本题应该选B。

7. Silk, printing, paper, the compass and powder originated in China, and ______ introduction in the west had far reaching effects.
A.these
B.their
C.those
D.its
答案：B
[解答] 考查物主代词。

空格后边是名词，故可以推断出应该填入物主代词。

由题干可知，此处传入的是丝绸、印刷术、造纸术、指南针和火药，故物主代词应用第三人称复数形式，所以正确答案是B。

8. Which sentence of the following is correct?
A.The climate here is cooler throughout the year than the rest of the country.
B.The climate here is cooler throughout the year than in the rest of the country.
C.The climate here is cooler throughout the year than at the rest of the country.
D.The climate here is cooler throughout the year than other places of the country.
答案：B
[解答] 考查比较状语从句。