（1）计算：18-2cos45°+(12)-2+|1-2|（2）先化简再求值：(1-1x)÷x2-2x+1x，其中x=-2．-数学

更多内容推荐

• ------Did you see the movie last night?------Yes, but it was __________ disappointing.A．a sort ofB．s
• 计算：tan45°+（12）-1-（π-3）0=（）A．2B．0C．1D．-1-数学
• I've got a bit of headache．It's nothing much, ______.A．anyhowB．moreoverC．besidesD．though-英
• Her previous experience makes her have a big advantage _______ the other applicants A．over B．ofC．tha
• ---- busy schoolwork , the children also have to take arts , music and sports classes in their free
• 计算或化简：（1）计算：4+(13)-1-(10-5)0-2tan45°（2）化简右边的式子：(2a-1+a-2a2-1)÷aa+1．-数学
• It's a pity that I missed the chance to get the signature of my favourite sports star, Liu Xian
• 计算=（）．-七年级数学
• -Do you think Jack is to blame?-Yes，it was very rude ________ facial paper to the guests at table.[
• ________, Nathan gave back the enormous amount of money he found.A．To his sorrowB．To his joyC．To his
• Student loan is supposed to provide financial support for people who would _______ not be able to go
• （1）计算：2cos60°-2×(12)-1+|-3|+(2-1)0（2）有这样一道题：“计算：x2-2x+1x2-1÷x-1x2+x-x的值，其中x=2012．”甲同学把“x=2012”错抄成“x=
• I can still recognize Mr. Johnson, who is standing by the door, even though he looks ___different n
• ______hearing the news that a hurricane was______, most of the people hurried to safer places.A．In,
• There was no wind.The smoke rose ________upward.A elegantly B straightly C extremely D regularly-英语
• 计算下列各题：（1）24×38-5；（2）(312-313+48)÷(3)2；（3）2+(-1)2009-11-2+(13)-2；（4）4(x-2)2=116．-数学
• 短文改错。 英语课上，老师要求同桌同学相互修改作文。假设以下小作文为你同桌所写，请你对其进行修改。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除-高二英语
• Reading is an experience quite different from watching TV; there are pictures ______ in your mind in
• 计算：2sin60°+(-2009)0-12+(12)-1．-数学
• 计算：20120-3tan30°+(13)-2-|3-2|．-数学
• _ _ busy schoolwork, the children also have to take arts, music and sports classes in their free tim
• —Do you think attending training courses is a great help when you look for a new job?—Well, it all d
• ---Did you hear the quarrel just now? ---________ I did．A．SimplyB．MerelyC．IndeedD．Really-英语
• –You will try not to annoy her when explaining why she hasn’t been invited, won’t you? --_________.A
• We prefer to measure our football team’s success _____ the number of fans attending rather than the
• 计算：-12006-(1+0.5)×3-1÷(-2)2+(cos60°-43)0+tan32°•cot32°．-数学
• _____ the injuries to his face, he broke both legs. [ ]A. In addition toB. ExceptC. But D. Except fo
• 计算：27-(4-π)0-(-1)2012+(-12)-1-|-33|．-数学
• 计算：2cos30°+3tan60°-（π-1）0-27+（12）-2．-数学
• I feel sure that ________ qualification，ability and experience，you are abundantly suited to the pos
• -We need a drink．I'm really thirsty-_______．Let,s have one．A．GenerallyB．StrictlyC．ExactlyD．Poss
• ---Excuse me, is the cinema at the third crossroads down this street? --- ____ It’s easy to see the
• Don’t turn the room __________, as I have just tidied it.A．upside downB．insideC．outsideD．inside down
• ------ What do you think of the concert?------ I really enjoy it．I didn’t expect it was ______ wonde
• Did you see that programmeSouth Africa last night?A．in B．for C．on D．to-高三英语
• –I’m sorry I lost your pen, Charlie. --Oh, _________? That’s all right.A．yesB．reallyC．sorryD．sure-英语
• 计算：-14×38+(12)-1-|-2|=______．-数学
• Mrs Smith was very ill.The doctor said she was ___ of death.A．at the edgeB．at edgeC．on edgeD．on the
• 计算：（12）-1-20110-31-tan60°．-数学
• The road was so narrow that there would be traffic jams____, especially during the rush hour. A．ever
• With everything needed______, she declared that the party began.A．in the placeB．out of placeC．in pla
• 下列四个数中最小的数是（）A．（-2011）×（-1）B．（-1）÷（-2011）C．（-2011）-1D．（-1）-2011-数学
• This means that for the first time doctors may be able to tell if an infected（被感染的）person who feels
• I’ve designed five or six different cars_____.A．by farB．so farC．that farD．farther-英语
• He had ________milk but_________ bread for breakfast.A．many; fewB．much; littleC．few; muchD．little; m
• The Opera House of Sydney was______designed like shells floating on the sea.A．commonlyB．creativelyC．
• You may as well go outing all by yourself; _______I may keep you company.A．differentlyB．alternativel
• She decided to apply _____ the boss _____ the new position .A．to ；toB．for ；forC．to ；forD．for ; to-高二
• The competition is fierce .No women or children are allowed to ________.A．joinB．take part inC．compet
• We will explore different approaches _________ information. [ ]A. to gathering B. of gatheringC. to