Because of global warming, the ice that polar bears depend on for survival _______.A．are slowing dis

更多内容推荐

• 30. My parents have promised to come to see me before I _____ for Africa.A．have leftB．leaveC．leftD．w
• You are still here? I ____ you _____ Beijing. A think, are leaving for B think, have already left fo
• .I remember putting the tape recorder in the corner, but what _______ it?A．has happened onB．has beco
• .The last thirty years _____ the greatest number of laws stopping our rights and progress. Until tod
• Good news-two of our classmates ______ into Tsinghua University in advance!A．have admittedB．have bee
• —Why didn’t you go to Shelly’s birthday party yesterday evening?—I ______ but I had an unexpected vi
• What a pity! When we got to the cinema，the movie The Assembly，so we saw only the end of it．A．had jus
• The professor gave orders to the students that the rest ______ before 5:30.A．be finishedB．will be fi
• ---You haven’t said one word about the design, Joe. What’s your idea? ---Sorry. I________about somet
• In Japan when we spent the night at a small country inn, we ________ so low on the floor before.A．ha
• —Where is your uncle’s home?—In New York. But he _________in Boston for four years.A．has livedB．had
• Tom ______ for 5 years, but he has been leading a new life since he was set free.A．was put in prison
• --- Ten dollars, please! --- How terrible! I ____ to bring my wallet with me. A was forgetting B had
• Oh, much smoke here ! Somebody _____ the window, please.A．opensB．openC．shall openD．will open-英语
• It is ________ the customers’ needs that has made chain stores so popular in big cities in China.A．m
• .---How long have you _______?---5 years.A．marriedB．got marriedC．marriedD．been married-英语
• .The bridge being built there _______ by the time you come back.A．has been completedB．will have been
• --Have you found your book yet? --- No, I’m not sure where I________ it?A．leaveB．had leftC．could hav
• – Do you know the West Lake in Hangzhou? – Yes, this is the third time that I ____ this beautiful ci
• He works as an engineer now, but he _______ on a farm for three years.A．has workedB．workedC．was work
• —You shouldn’t have gone there alone last night. —But I __________ , because Xiao Wang went there, t
• The No. 8 bus _______ to Chengdu college of Geology, and not to Sichuan University.A．are goneB．is be
• Sales of CDs have greatly increased since the early 1990s, when people_____to enjoy the advantages o
• You really need to go out and get some fresh air and sunshine．You ______ overworkedduring the last t
• .Tom_______at least three coffees every day until his doctor told him to limit it to one.A．had drunk
• .. I heard she _________ a book last year, but I don’t know if she has finished it.A．was writingB．wr
• As the storm drew near, black clouds were _____ over the sky.A．smoothingB．wanderingC．runningD．gathe
• ---Could I have a window seat ? ---All right. Your flight _____ boarding at Gate 18 at 2:15.A．have
• ---How long have you retired ,Grandpa? ---Well, four years. But you know, I_____ for Courtaulds for
• —I guess it must be pretty hot in Hong Kong in summer, isn’t it?—Yes. That’s why weto Beijing. But w
• —Johnthis week? —No. He’s on holiday.A．Does, workB．Did workC．Has, workedD．Is, working-英语
• Ann ______ here any more．She left last month．A．won't workB．doesn't work C．hasn't work
• Tom, who _________English for 20 years in English, now has been appointed headmaster of our school．A
• Indeed,thanks to the good ideas of lots of people,like the cycling fans in the 1960s,many people aro
• —Have you found the problem with the computer ? —Sorry. It ______ .A．is checkedB．is being checkedC．h
• The woman who’s carrying a baby in her arms, _________aboard first．Don’t crowd in!A．goesB．wentC．goD．
• ．---The movie 2012 will be on at 8 pm．What about picking you up at 7? ---All right．I will have come
• Facing danger, he always _____ calm.A．seemsB．remainsC．becomesD．appears-英语
• He hoped that he would _____ a more suitable job．A．be assignedB．assignC．have been assignedD．have ass
• Mr. White works as a lawyer now, but hein a company for several years.A．workedB．has workedC．had work
• —I wonder if you could go to the movie with me.—Oh, just leave me alone. I _______ a composition all
• As well as costing the Middle East dearly in terms of human life, conflict! (冲突) _______ the region
• Because of the Russian gas limit to Europe, attempts _______ to use botanical fuel as a source of po
• The shoes made in Chengdu are usually of high quality, so they ________ long.A．woreB．are wornC．wearD
• My train arrives in Shanghai at 10 this morning . The plane I would like to take from thereby then A
• –Is this raincoat yours?–No, mine _____ there behind the door.A．hangsB．has hungC．is hangingD．hung-英语
• Between the two roadsa TV tower called “Skyscraper Tower”.A．standsB．standingC．which standsD．stand-高
• By the time you have completed the essential training, you _____ exposed to virtually every new feat
• About one fourth of the families in the city have private cars and this number _____ to double in fi
• The two brothers _____ every day and there was no love left between them.A．quarreledB．hatedC．lovedD．