下列计算正确的是（）A．-2-2=0B．2-1-12=0C．3÷13=1D．52=20-数学

更多内容推荐

• Don’t forget to turn on your radio at 7 p.m. this evening. We’ll be back _______ then.A．in the airB．
• They had a pleasant chat ________ a cup of coffee.A．forB．during C．overD．with-高三英语
• Everyone was on time for the meeting, ______Chris, who’s usually ten minutes late for everything.A．b
• He is ready to help others ,seldom, ______refusing them when they turn to him.A．if never B．if ever
• —Leaving for Beijing?— ________. A．SoonB．Lately C．The other dayD．Sooner-英语
• He __________ lives in the house where he was born.A．alreadyB．yetC．stillD．ever-英语
• Work gets done __________ when people do it together, and the rewards are higher too. A．easilyB．very
• Speaking of all the songs he has written, I think this is probably his __________ one. A．better-kno
• The result of the football match was 2 to 2，______ the satisfaction of both teams.A．withB．forC．atD．t
• 计算：|-1|+50-2•sin45°+2-1=______．-数学
• Mr. Han, my neighbor, is always helping those who are in trouble without expecting anything ________
• You can come here to ask me ________ if you have any questions.A．at one timeB．at a timeC．at any time
• _____ all my teachers, Mr． Moore is the one who impresses me most．A．AtB．OnC．ToD．Of-高三英语
• — Credit cards are ________ useful when travelling.— True. They save us the trouble of taking too mu
• Wang Ping hesitated for ___ before he ___ to the question.A．sometime, repliedB．some time, repliedC．s
• After two years’ research, we now have a __________ better understanding of the disease. A．veryB．far
• —Could you tell Lucy about the news when you see her?—Sure, I will ________ I see her. A．certainlyB．
• 计算：（1）(-1)2011-(3-2)0+(12)-1（2）2a-4a2+6a+9÷a-2a+3•(a+3)．-数学
• Ladies and gentlemen , I have the great privilegeintroducing our speaker for tonight . A．inB．of C．a
• John was about to go back to sleep ______ suddenly his bedroom became as bright as day．A．afterB．when
• 计算：(13)-1-5×15+38-数学
• Crusoe isn’t good enough figure, but his outstanding skill compensates for it.A．in response toB．in t
• The Rocket has been busy playing as guest ________ the last month. [ ]A. byB. since C. afterD. for-高
• They have held three meetings this week _________.A．aloneB．lonelyC．everD．just-英语
• The melon the Smiths served at dinner would have tasted __________ if it had been put in the fridge
• The final score of the basketball match was 93-94. We were only __________ beaten.A．nearlyB．slightl
• — I’d like to go home now. — Why not stay here for the night? It is so late now. ____, it is raining
• I’ll get Bill to accompany methe piano when I sing a song at the concert.A．atB．with .C．toD．by-高二英语
• Don’t lose heart . Keep on working hard and you will succeed________. A on time B at no time C at on
• _____ the absence of the manager, we were unable to decide on the date of the celebration．A．In spite
• The Acropolis was constructed in the 5th century BC ______ a high altitude above the city_____ Athen
• the fierce competition in finding a good job in big cities, many fresh graduates are trying their fo
• ①（π-3）0②0.5-2③（0.04）2003•[（-5）2003]2；④（-2a）•a-（-2a）2⑤[（3x+2y）（3x-2y）-（x+2y）（5x-2y）]÷（4x）⑥（x2n+1+xn+3
• Mr.Smith used to smoke __________ but he has given it up.A．seriouslyB．heavilyC．badlyD．hardly-英语
• _____the temperature falling so rapidly, we couldn't go on with the experiment. [ ]A. WithB. As
• It’s hard for him playing against me. I’ve got nothing to play for, but for him, he needs to win so
• 计算：（a-1b2）3=______；π0+3-2=______．-数学
• 下列各式中正确的是（）A．-x+y-x-y=1B．1-x+y=-1x-yC．a2÷a-3=a-1D．yx=y2x2-数学
• It is evident that success lies _____ hard work; ______ other words, hard work leads to success．A．on
• I can’t tell you the exact time when I will get there. ____, I’ll be there as early as I can.A．No m
• I admired my classmate Linda very much . ________ her prettiness, she was smart and helpful. A．Excep
• She not only entered the competitionshe __________ won it.A．actuallyB．especiallyC．hopefullyD．exactly
• —Why did you quit your job?—It was goodsalary, but I didn’t like the working conditions.A．in need of
• Our school is on the side of Chaoyang Road,our school is a large housing block where many people fro
• 计算：（-2）2-（1-2）0-数学
• It is possible that ______ 2030, cars and airplanes will run on the new fuel.A．byB．onC．untilD．at-英语
• （1）计算：-32+(3-2)0-4sin30°+(12)-1；（2）先化简，再求值：(a2-4a2-4a+4-12-a)÷2a2-2a，其中，a是方程x2+3x+1=0的根．-数学
• —Does Jim do his new job well？ —______ his old job. How stupid！I fear there’s no hope for him.A．No
• 计算：（1）(π-1)0+(12)-1+|5-27|-23（2）已知x=2-32+3，y=2+32-3，求x2+y2的值．-数学
• Look, a group of students are playing the violin there, ____their teacher as the conductor.A．in fron