属于交流电动机无级调速方法的是。( )
选项(5分):
[单选题] The football match will be put off if it |填空].A is rained。 B rained。 C rains。 D will rain。 |
[单选题] Your colleage will help you finish the project on time. So you[填空] worry about it.A needn't。 B doesn't need。 C needn't to。 D don't need。 |
[单选题] No sooner[填空] at the airport than he was surrounded by the reporters.A has the movie star arrived。 B had the movie star arrived。 C the movie star had arrived。 D the movie star has。 |
[单选题] The girl queued [填空] for two hours to buy tickets for this Sunday's concert.A up。 B on。 C dawn。 D in。 |
[单选题] The Bakers arrived last night. If they'd only let us know earlier,[填空 at the airport.A we'd meet them 。 B we'll meet them 。 C we'd have met hem。 D we've met them。 |
[单选题] This shirt is made [填空] your brother[填空] his own measure.A for; by。 B to; to。 C for;for。 D for;to。 |
[单选题] [填空] the parents [填空] the children want to buy the book.A Either; nor。 B Both; or。 C Neither;or。 D Both;and。 |
[单选题] You will miss the train [填空] you hurry up.A if。 B unless。 C as。 D for。 |
[单选题] The teacher said that he[填空] not seen the student that day.A has。 B have。 C having。 D had。 |
[单选题] What they said doesn't[填空] what the police have told us, so we have to find more evidence.A agree with。 B contribute to。 C make up。 D show off。 |
[单选题] By the time the firemen arrived, the fire [填空] with the great effort of all.A has been put out。 B has put out。 C had been put out。 D had put out。 |
[单选题] After the fire, a new theatre was put up [填空]there had once been a museum.A hat。 B where。 C which 。 D when。 |
[单选题] As far as we are concerned, education is about learning and the more you learn,填 空A you are equipped the more for life。 B the more life you are equipped for。 C the more equipped for life you are。 D the more for life are you equipped。 |
[单选题] The teacher won't tell the student the answer to the math problem until he [填空] on it for more than an hour.A had worked。 B will have been working 。 C will have worked。 D has been working。 |
[单选题] Our parents were strict. They requested that we [填空] television on week nights.A have not watched。 B not be watching。 C must not to watch。 D not watch。 |
[单选题] 填空] the help of the teacher, the student who wasn't good at English 填空] the difficult problem quickly.A Under; worked out。 B With; solved。 C With; worked on。 D Under; was solved。 |
[单选题] The children won't let their parents[填空] in that way.A be treated。 B treated。 C being treated。 D to be treated。 |
[单选题] Before Zhanghua came to England, she[填空] English for ten years.A have learned。 B had learned。 C learned。 D learning。 |
[单选题] The woman pretended [填空] the boy when he passed by.A having not seen。 B to not see。 C not seeing。 D not to see。 |
[单选题] After t hey quarreled, t he girls stood t here,[填空] at each other.A looking。 B glancing。 C staring。 D glaring。 |
[单选题] Sometimes[填空] English is quite different from [填空]English in many ways.A spoken; written。 B spoken; writing。 C speaking; written。 D speaking; writing。 |
[单选题] Li Tao's mother [填空] the Party since 1978.A was in。 B has been in。 C has joined。 D joined。 |
[单选题] Nowhere [填空]as in the park of the city.A the flowers were so beautiful。 B so beautiful were the flowers 。 C so beautiful the flowers were。 D was the flowers so beautiful。 |
[单选题] Both her parents look sad.Maybe they[填空] what's happened to herA must know。 B knew。 C have known。 D will know。 |
[单选题] Alice[填空] in the laboratory every night over the last three weeks.A had been working。 B has been working。 C worked。 D works。 |
[单选题] The form takes[填空] ten minutes to complete and can be used along with the assessment interview.A precisely。 B punctually。 C mainly。 D approximately。 |
[单选题] This is really an[填空] day to all of us!A be exhausting。 B exhausted。 C exhaust。 D exhausting。 |
[单选题] My hair wants [填空]. I'd better have it done tomorrow.A cutting。 B being cut。 C to cut。 D cut。 |
[单选题] The famous writer wrote many children's books, nearly half of [填空 were published in the 1980s.A which。 B them。 C that。 D what。 |
[单选题] Some animals sleep[填空] the day and wake up[填空]night.A by; by。 B in; at。 C at; in。 D in;by。 |
[单选题] The job would require that[填空] at 8 o'clock every morning.A she will be at the office 。 B she be at the office。 C she was at the office 。 D she has been at the office。 |
[单选题] As the light turned green, the woman stood for a moment, not[填空], and asked herself what she was going to do.A moving。 B to move。 C moved。 D being moved。 |
[单选题] I'm really tired[填空] Jack. He had me [填空] for an hour in the rain.A of, waiting。 B of; waited。 C with; waited。 D with; wait。 |
[单选题] We discovered[填空] we had learned to be valuable.A what。 B which。 C that。 D how。 |
[单选题] 填空] beat Xiao Zhang black and blue is not knownA What。 B Who。 C Whoever。 D Whom。 |
[单选题] His aunt's house in the downtown area is much smaller than his , but it is twice[填空] expensive.A as。 B too。 C very。 D so。 |
[单选题] Were it not for the rainny weather, they [填空] all rightA would be 。 B may be。 C would have been。 D were。 |
[单选题] At college, Barack Obama didn't know that he [填空] the first black president of the United States of America.A was to become。 B became。 C is to become。 D becomes。 |
[单选题] 填空]the manager will be able to come remains a questionA That。 B Whether。 C What。 D When。 |
[单选题] Zhang Hua was the very one of the students who [填空] praised at the class meetingA are。 B is。 C were。 D was。 |
[单选题] —It's very windy and dusty in Beijing. Well, more trees [填空] every year to stop the wind and sand.A should plant。 B should planted。 C can planted。 D must be planted。 |
[单选题] —I drove to Shen Zhen for the consert last week. —Is that |填空 | you had a few days off?A how。 B why。 C what。 D where。 |
[单选题] If the student[填空], she will bring her violin.A comes。 B came。 C come。 D will come。 |
[单选题] His grand parents[填空] in the countryside.A are used to live。 B used to live。 C used to living。 D are used to live。 |
[单选题] After the student was praised for what he had done, he said:"I[填空 even better under harder conditions. ”A had done。 B did。 C would have done。 D would do。 |
[单选题] In the month, the man earned as much as,if [填空] than $50,000A no more。 B no much。 C not more。 D not much。 |
[单选题] As is known to all, pandas are [填空] native to China, that is, China is [填空] home to pandasA ;/。 B /; the。 C the;/。 D the; the。 |
[单选题] Beauty and the Beast is a very nice film .I[填空] it twice.A see。 B saw。 C have seen。 D will see。 |
[单选题] If the weather is fine,we'll go.If[填空],[填空].A no; not。 B not; no。 C no; no。 D not; not。 |
[单选题] No meat for my sister because she's [填空] a diet.A in。 B at。 C with。 D on。 |
[单选题] When[填空] with kindness, the man was very amiable.A was treated。 B treating。 C treat。 D treated。 |
[单选题] He is said [填空]in Shanghai.A to work。 B to be working。 C being working。 D worked。 |
[单选题] At the foot of the mountains [填空].A a village lie。 B does a village lie。 C lying a village。 D lies a。 |
[单选题] They're talking about the piano and the pianist[填空]they were in the concert we attended last night.A which 。 B whom 。 C who 。 D that。 |
[单选题] Tables [填空] of stones or wood.A can made。 B can be made。 C can make。 D made。 |
[单选题] Catherine was born in Beijing but[填空] in Britain, because her parents went there to work for some reason.A taken out。 B brought up。 C taken up。 D brought out。 |
[单选题] E-mailing is much [填空] than long-distance callingA the cheapest。 B cheapest。 C cheaper。 D cheap。 |
[单选题] After[填空]the old man, the doctor suggested that he[填空] a bad coldA examined, catch 。 B examined, had caught。 C examining, had caught。 |
[单选题] The judge insisted that the woman [填空] innocent and that she[填空 ]at once.A was; be set free。 B be; be set free;。 C be; was set free。 D was; was set free。 |
[单选题] The super market doesn't open until 11 a.m.,[填空] it loses a lot of business.A or。 B for。 C so。 D but。 |
[单选题] We will be thankful for [填空] you have done.A hat。 B which。 C what。 D who。 |
[单选题] I don't like Mary at all. She never[填空] her promise.A keeps。 B makes。 C breaks。 D does。 |
[单选题] The basketball match will be put off if it [填空].A snow。 B snowed。 C snows。 D will snow。 |
[单选题] His homework [填空], Jim decided to go and see the play.A doing。 B done。 C did。 D do。 |
[单选题] I have many books, some of [填空] are wtitten by Mark Twain.A hose。 B which。 C that。 D them。 |
[单选题] In some parts of the world, coffee [填空] with milk and sugar.A is serving。 B is served。 C serves。 D served。 |
[单选题] If the man were any younger, he would do [填空] he is interested in.A whomever。 B whatever。 C whoever。 D whichever。 |
[单选题] [填空] the country, the [填空] to migrants it is.A The richest; the most attractive。 B The richer; the most attractive。 C The rich; the more attractive。 D The richer; the more attractive。 |
[单选题] What[填空] her daughter[填空] by the time she was seven?A had; done。 B did;did。 C has; done。 D did;do。 |
[单选题] The service was terrible and [填空] the food.A so as to。 B so was。 C so as。 D so that。 |
[单选题] They need to be more mature and ready to [填空] their mistakes.A hold on to。 B cut off。 C is。 D make up for。 |
[单选题] The reason[填空] Susan hasn't come is[填空] she has to look after her child.A why; that。 B that; because。 C why; since。 D which; because。 |
[判断题] By the time Lily gets home, her mother wi l have left for Bei jing to attend a meeting.正确 、正确。 错误 、错误。 |
[单选题] I t was when Poly took a job in a company [填空]she began to learn English.A that。 B when。 C which。 D where。 |
[单选题] All the mobile phones must [填空] before the meeting starts.A be turning off。 B turn off。 C be turn off。 D be turned off。 |
[单选题] All the coats are sold at half price for the super market[填空].A had closed down。 B has closed down。 C closed down。 D is closing down。 |
[单选题] Mother was worried because little Alice was ill, especially [填空 Father was away in France.A during。 B that。 C as。 D if。 |
[单选题] —Be sure to get up earlier tomorrow morning. [填空],I'll be as early as a bird.A No, I will。 B Of course not 。 C I'm afraid I can。 D OK,I will。 |
[单选题] Although he knew little about the work done in the field of chemistry, he succeeded [填空]other experienced experts failed.A which。 B that。 C what。 D where。 |
[单选题] 填空] were present at the meeting.A Either。 B Every。 C All。 D Each。 |
[单选题] 填空] our teacher suddenly fell ill last week made us surprisedA It。 B That。 C What。 |
[单选题] The boy [填空] in blue is my third son.A dressed。 B is dressed。 C dressed himself。 D dressing。 |
[单选题] The young man begin [填空] Franch eignt years ago .A learning。 B learn。 C learned。 D learnt。 |
[单选题] She couldn't help [填空] when she heard the good newsA laughed。 B laugh。 C laughing。 D to laugh。 |
[单选题] [lis mother was surprised at [填空].A what he is saying。 B what he said。 C what said he。 D what。 |
[单选题] Hearing the footsteps from the stairs, the little boy hurriedly turned off the computer, picked up a book and pretended[填空].A having read。 B to be reading。 C to reading。 D reading。 |
[单选题] The old woman,[填空]so badly, almost lost her memoryA disturbing。 B being disturbed。 C having disturbed。 D having been disturbed。 |
[单选题] I t's the forth time [填空]late this month.A when you've arrived 。 B that you arrived。 C when you arrived。 D that you've arrived。 |
[单选题] They will have a[填空] holiday after the exam.A two-month。 B two month。 C two month's。 D two-months。 |
[单选题] Everybody believed the man [填空] away the diamond ring.A to have taken。 B to take。 C taking。 D be taken。 |
[单选题] To tell[填空]truth, it is [填空]struggle for the actor to get ready in such a short time.A the; really a 。 B the; real a 。 C a; a real。 D a; a really。 |
[单选题] [填空]will go is not important.A Whom 。 B Which。 C Who@That。 |
[单选题] Not[填空] Mary's address and telephone number, we couldn't get in touch with her.A know。 B knowing。 C knew。 D to konw。 |
[单选题] We offered Jonson our congratulations [填空] his passing the college entrance exams.A at。 B of。 C for。 D on。 |
[单选题] Which would you rather have,the [ 填空] chicken or the fish?A maid。 B ideal。 C fried。 D fuel。 |
[单选题] Neither the students nor the professor [填空] anything about it.A knows。 B know。 C is known。 D are knowing。 |
[单选题] The[填空] expression on the student's face suggested that he was not able to work out the[填空] problem.A puzzled; puzzled。 B puzzling; puzzled。 C puzzled; puzzling。 D puzzling; puzzling。 |
[单选题] If they keep on, they'll succeed [填空].A at one time。 B at the same time。 C in time。 D on time。 |
[单选题] All the machines[填空] by the end of the following month.A will be repaired。 B will have repaired。 C will have been repaired。 D have been repaired。 |
[单选题] [填空] student in the class took part in the performanceA Every。 B Both。 C All。 D Each。 |