第十一周每日一题:星期一:当A=2×5×7,B=2×3×5,A、B的最大公因数是( );当A=3B,则A、B的最大公因数

lin12182022-10-04 11:39:543条回答

第十一周每日一题:星期一:当A=2×5×7,B=2×3×5,A、B的最大公因数是( );当A=3B,则A、B的最大公因数是( );当A=B+1,则A、B的最大公因数是( )。星期三:7/9的分子加上21,要使分数的大小不变,它的分母应( )。星期四: 从29/45的分子、分母同时减去同一个数,使得这个分数可以化简为3/5,减去的数是多少?星期五:分数4/19的分子和分母同时加上一个相同的数,使分数可以变成3/4,加上的数是多少?星期五怎么做

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Have you ever heard of the lovely animals,giant pandas?They are beautiful black and white animals.They look __1__ bears.Almost all live in China and they are very quiet and peaceful.
Do you know how many giant pandas there are in the world?World Wildlife Fund has __2__ four years counting pandas in the wild.It __3__ there are 1590 in all now.We may say pandas are __4__ because people around the world love them and are trying to help them.__5__,pandas are also unlucky because they are in danger now.
The number of giant pandas in the world is getting smaller and smaller __6__ their living areas are becoming farmlands.Also,people hunt them for their fur.
Pandas are not good at __7__ babies.Mother giant pandas have only one or two babies at a time.Even in the wild,scientists have found that mother pandas give birth only __8__ 28 months.That’s __9__ panda number goes up so slowly.
Because of these,World Wildlife Fund has made great efforts to __10__ pandas.And some Chinese scientists are also trying to find ways to help panda.
( )1.A.after B.like C.as D.at
( )2.A.spent B.kept C.paid D.taken
( )3.A.tells B.speaks C.says D.talks
( )4.A.lucky B.quiet C.lovely D.peaceful
( )5.A.But B.However C.And D.So
( )6.A.since B.because C.when D.while
( )7.A.taking B.bringing C.calling D.making
( )8.A.each B.all C.every D.both
( )9.A.why B.because C.how D.what
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The number of giant pandas in the world is getting smaller and smaller __B__ their living areas are becoming farmlands. Also, people hunt them for their fur.
Pandas are not good at __B__ babies. Mother giant pandas have only one or two babies at a time. Even in the wild, scientists have found that mother pandas give birth only __C__ 28 months. That’s __A__ panda number goes up so slowly.
Because of these, World Wildlife Fund has made great efforts to __1D__ pandas. And some Chinese scientists are also trying to find ways to help panda.
( )1. A. after B. like C. as D. at
( )2. A. spent B. kept C. paid D. taken
( )3. A. tells B. speaks C. says D. talks
( )4. A. lucky B. quiet C. lovely D. peaceful
( )5. A. But B. However C. And D. So
( )6. A. since B. because C. when D. while
( )7. A. taking B. bringing C. calling D. making
( )8. A. each B. all C. every D. both
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第十一周英语双休日作业
Have you ever heard of the lovely animals,giant pandas?They are beautiful black and white animals.They look __1__ bears.Almost all live in China and they are very quiet and peaceful.
Do you know how many giant pandas there are in the world?World Wildlife Fund has __2__ four years counting pandas in the wild.It __3__ there are 1590 in all now.We may say pandas are __4__ because people around the world love them and are trying to help them.__5__,pandas are also unlucky because they are in danger now.
The number of giant pandas in the world is getting smaller and smaller __6__ their living areas are becoming farmlands.Also,people hunt them for their fur.
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( )1.A.after B.like C.as D.at
( )2.A.spent B.kept C.paid D.taken
( )3.A.tells B.speaks C.says D.talks
( )4.A.lucky B.quiet C.lovely D.peaceful
( )5.A.But B.However C.And D.So
( )6.A.since B.because C.when D.while
( )7.A.taking B.bringing C.calling D.making
( )8.A.each B.all C.every D.both
( )9.A.why B.because C.how D.what
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Do you know how many giant pandas there are in the world? World Wildlife Fund has __A__ four years counting pandas in the wild. It __C__ there are 1590 in all now. We may say pandas are __A__ because people around the world love them and are trying to help them. __B__, pandas are also unlucky because they are in danger now.
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Because of these, World Wildlife Fund has made great efforts to __1D__ pandas. And some Chinese scientists are also trying to find ways to help panda.
( )1. A. after B. like C. as D. at
( )2. A. spent B. kept C. paid D. taken
( )3. A. tells B. speaks C. says D. talks
( )4. A. lucky B. quiet C. lovely D. peaceful
( )5. A. But B. However C. And D. So
( )6. A. since B. because C. when D. while
( )7. A. taking B. bringing C. calling D. making
( )8. A. each B. all C. every D. both
( )9. A. why B. because C. how D. what
( )10. A. hunt B. kill C. count D. protect
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12、甲乙两人以不变的速度在环形路上跑步,如果同时同地出发.相向而行,每隔2分钟相遇一次;如果同向而行,每隔6分钟相遇一次.已知甲比乙跑得快,甲乙每分各跑多少圈?
设甲每分钟跑X圈,乙每分钟跑Y圈.根据题意列方程得:
2X+2Y=1
6X-6Y=1
求得X=1/3 ,Y=1/6
答:甲每分钟跑1/3圈,乙每分钟跑1/6圈.
13、有五角,一元,二元三种人民币100张,合计100元.其中五角和二元的合计75元,每种人民币各几张?
设五角的有a张,一元的有b张,二元的则为100-a-b张
根据题意
0.5a+b+2×(100-a-b)=100(1)
0.5a+2×(100-a-b)=75(2)
(2)代入(1)
b=100-75=25张
代入(2)
0.5a+150-2a=75
75=1.5a
a=50
所以五角的有50张,一元的有25张,二元的25张
14、甲乙两人各自带了若干钱,如果甲得到乙的钱的一半,那么甲共有钱50.如果乙得到甲所有钱的三分之二,那么乙也共有钱50.问:甲乙各带了多少钱?
设甲带钱a元,乙带钱b元
a+1/2b=50(1)
b+2/3a=50(2)
化简
2a+b=100(3)
3b+2a=150(4)
(4)-(3)
2b=50
b=25元
a=50-25/2=37.5元

甲带了37.5元,乙带了25元
参考