题目内容：

正确率,积分给!
1.有一块长60厘米,宽20厘米,高5厘米的木快,按它的长分成三段,求：这三段的表面积和.
2.已知一角的余角比它的2倍大15度,求这个角的补角.
3、某工厂加工一批零件,需200小时完成,工作了60小时后,由于技术革新,工作效率提高了25 %,还需要多少小时完成任务.
4、某银行把若干人民币分成两部份分别贷款给甲、乙两个经营者,年利率分别为4%和5%,一年后银行获得两部分利息共计4.4万,如果把两个利率交换可增加0.2万元,问甲、乙两人各贷款多少元?
5、某班学生春游分组活动中,每组6人,则多出3人,若每组8人,则有一组少5人,问该班学生共多少人,应该分成几组?
6.请根据 20分之x+18分之x+4=1 编写一道应用题.
( )6.I’d like to _____ a teacher.
A.be B.do C.is D.are
( )7.Mr.Wang _____ work at 8:00a.m.every day.
A.start B.starts C.starting D.started
( )8.I want to be a policeman ______ I like to catch bad guys.
A.so B.because C.for D.as
( )9.--Do you like your job?--Yes,I _____.
A.do B.like C.likes D.did
( )10.My father likes his job and he usually makes sick people _______.
A.better B.well C.good D.best
( )11.She usually does some washing on _______.
A.the evening B.the morning C.Sundays D.night
( )12.Would you like to put _____ fires?
A.out B.on C.up D.down
( )13.The businessman goes into the bank _____ money.
A.to B.about C.of D.for
( )14.Sue is writing a diary _____ her trip to Suzhou.
A.of B.with C.to D.about
( )15.--How do you get to school?-- __________.
A.Take a bus B.In my bike C.On foot D.On the bus
( )1.It will take you half an hour ______ get there.
A.to B.on C.in D.off
( )2.Mum spends one hour ______ food every day.
A.to cook B.cook C.cooking D.cooked
( )3.The power station is ____ far away from our house.
A.quite B.to C.quiet D.very much
( )4.Jack ____ the train to visit his friends.
A.by B.get on C.take D.takes
( )5.I see _____ flowers when I walk around the park.
A.a B.any C.plenty of D.a little
( )6.It took us _____ than two hours to get to the stop.
A.more B.much C.quite D.many
( )7.There are always a lot of ____ in the park at weekends.
A.woman B.man C.people D.child
( )8.Can you find out how long your mother _______ doing housework?
A.spends B.pays C.takes D.costs
( )9.Would you please _____ me the way to the cinema?
A.told B.telling C.to tell D.tell
( )10.Are snacks good ______ bad for us?
A.to B.or C.and D.also
英语不要ABCD乱选~我要正确率,
1、画线段AB=3厘米,延长AB到C,使BC= AB,再延长CA到D使CA=AD,并计算CD的长度.
2.一个角的补角加上60°的余角后,等于这个角的余角的5倍,求这个角的补角.
3、在一个长、宽、高分别为2厘米,3厘米,4厘米的长方体正中表面放一个边长为1厘米的正方体,则此组合图形的表面积是多少?
4、∠ a与∠ b互补,∠a 比∠b 大26°,求∠a 和∠b .
5、已知线段AB = 18 cm,M是AB中点,C是AB上一点,且AC = 5BC,求MC的长.

优质解答

我全部都能解答,加我百度HI,我一一解答给你
1.分成三段,也就是多了4个面,
因为宽和高不变,这4个面面积都一样
三段木块的表面积=原木块的表面积+4倍的宽乘以高
（60*20+60*5+20*5）*2+20*5*4=3600平方厘米
2.设这个角为x度
x+（x*2+15）=90
x=25度
这个角的补角是180-25=155度
3.设这批零件为1,那么每小时工作量就是1/200
工作效率提高后的每小时工作量就是1/200*1.25=1/160
共走60小时的工作量是60*1/200=3/10
剩余工作量是1-3/10=7/10
剩余时间就是（7/10）/（1/160）=112小时
4.设甲贷款x万元,乙贷款y万元
那么：
4%*x+5%*y=4.4
5%*x+4%*y=4.4+0.2
得到结果x=60万元,y=40万元
5.设要分成x组
那么：
6x+3=8x-5
得出x=4
总人数=4*6+3=27
所以要分成4组,一共有27个学生
6.这个没做
英语的
B C A A D C A B D C B B B A C A D C D B
补充的数学马上送上