Question

数学英语题目，正确率要高，就悬赏高分，过程具体啊~~~

1、图中，直线上依次有A、B、C、D、E、F六个点，且AB=a，BC=b，CD=c，DE=d，EF=e，求图中所有线段长度的和（用a、b、c、d、e求长度）（这图凑合着看看吧）
━A━━━B━━C━━━━━D━━━E━F━
a b c d e

2、一个长方体的长是8厘米，宽是长的4分之3 ，高是宽的75%.求：这个长方体的表面积.

3、互为余角的两个角的差为15°，求：
(1)较大角的补角的度数； (2)较小角的补角与较大角的补角的差.

4、在-5分之3 和5分之2 之间插入三个数，使这五个数中每相邻两个数的差都相等，求插入的这三个数。

5、用甲、乙、丙三种糖果按2∶4∶3的比，混合成135千克什锦糖，问需要甲、乙、丙三种糖果各多少千克？

6、今天小丽一家人的岁数总和是100岁，爸爸比妈妈大5岁，妈妈的岁数是小丽岁数的4倍少2岁，则小丽和爸爸，妈妈今年各几岁？

7、小丽家安装了分时电表，每天早上6：00到晚上22：00为平时段，每度电0.61元，其余时间为谷时段，每度电比平时段便宜0.31元，以知小丽家谷时段的耗电量是平时段的½ ，本月共付电费100.32元，求小丽家本月的耗电量.

8、体育场有一环形跑道长400米，甲、乙两人练习长跑，甲每秒跑8米，乙每秒跑7米，两人在相距60米的地方同时同向而行，多少秒后两人第一次相遇？

( ) 1. I have a friend and she can’t read _______ write.
A. and B. but C. or D. so
( ) 2. Jenny and Alice like ______________ together.
A. be B. to C. in D. to be
( ) 3. Don’t sit between ______________________.
A. you and me B. you and I C. me and you D. I and you
( ) 4. _______ your father ________ Hong Kong yet?
A. Has…been to B. Has…gone to C. Does…go D. will… go
( ) 5. We’ll have a visit ____________ the Bund next week.
A. to B. in C. on D. from
( ) 6. It’s raining outside, so our teacher tells us _____________ football.
A. don’t play B. doesn’t play C. to not play D. not to play
( ) 7. The students __________ rubbish to look after the environment.
A. put up B. get up C. pick up D. look up
( ) 8. Mum always keeps our bedroom ___________.
A. cleaning B. cleans C. to clean D. clean
( ) 9. –What about a trip to Ocean Park? –___________________________.
A. I’m sorry. B. All right. C. Excuse me. D. Thank you.
( ) 10. He has worker in Shanghai for _____________ hour.
A. the B. an C. a D. /

( )1. ____ man over there is our new English teacher. He is ____ European.
A. The; an B. A; a C. A; / D. The; a
( )2. Sheep are very important in our life. We can get wool ____ them.
A. from B. on C. in D. with
( )3. “Help ____ to some chicken, boys and girls.” Mrs. Green said.
A. you B. Yours C. yourself D. yourselves
( )4. Kitty is going to buy ____ for her new flat.
A. a furniture B. some furniture C. a piece furniture
D. some furnitures
( )5. The Earth is our home. People should stop ____ it.
A. pollute B. Pollution C. polluting D. to pollute

数学题要过程啊，英语选择题别给我ABCD乱写啊，我要的是正确率啊，好的加分！！！

Answer 1

1、图中，直线上依次有A、B、C、D、E、F六个点，且AB=a，BC=b，CD=c，DE=d，EF=e，求图中所有线段长度的和（用a、b、c、d、e求长度）（这图凑合着看看吧）
━A━━━B━━C━━━━━D━━━E━F━
a b c d e

解：图中所有线段及其长度如下：
AB=a
AC=a+b
AD=a+b+c
AE=a+b+c+d
AF=a+b+c+d+e
BC=b
BD=b+c
BE=b+c+d
BF=b+c+d+e
CD=c
CE=c+d
CF=c+d+e
DE=d
DF=d+e
EF=e,
所有线段长度相加得所有线段的和为5a+8b+10c+8d+5e

2、一个长方体的长是8厘米，宽是长的4分之3 ，高是宽的75%.求：这个长方体的表面积.

解：长:8，宽:8x3/4=6，高:6x75%=64.5
S=(8x6+8x4.5+6x4.5)x2=222

3、互为余角的两个角的差为15°，求：
(1)较大角的补角的度数； (2)较小角的补角与较大角的补角的差.
解：设较大角为X度，所以x-（90度-x）=15，x=52.5度
因为较大角是52.5度，所以它的补觉是127.5度
较小角是37.5度，所以它的补角是142.5度
所以差为15度

4、在-5分之3 和5分之2 之间插入三个数，使这五个数中每相邻两个数的差都相等，求插入的这三个数。
解： 设每两个数之间的差为x
则，-3/5 +4x=2/5
解得到x=1/4,
所以这三个数是分别是-7/20 ， -1/10 ， 3/20

5、用甲、乙、丙三种糖果按2∶4∶3的比，混合成135千克什锦糖，问需要甲、乙、丙三种糖果各多少千克？
解：2+4+3=9
则需要甲:135 x 2/9=30
乙:135 x 4/9=60
丙:135 x 3/9=45

6、今天小丽一家人的岁数总和是100岁，爸爸比妈妈大5岁，妈妈的岁数是小丽岁数的4倍少2岁，则小丽和爸爸，妈妈今年各几岁？
解：设小丽今年x岁，则妈妈为4x-2 岁，爸爸4x-2+5 岁
依题意得
x+4x-2+4x-2+5=100
解得x=11
所以妈妈42岁，爸爸47岁

7、小丽家安装了分时电表，每天早上6：00到晚上22：00为平时段，每度电0.61元，其余时间为谷时段，每度电比平时段便宜0.31元，以知小丽家谷时段的耗电量是平时段的½ ，本月共付电费100.32元，求小丽家本月的耗电量.
解： 设平时段耗电量为x度，则谷时段耗电量为1/2x度
依题意得 0.61x+（0.61－0.31）× 1/2x=100.32
解得 x=132
1/2x＝66
66+132=198
所以本月平时段耗电量为132度， 谷时段耗电量为66度,总耗电量为198度。

8、体育场有一环形跑道长400米，甲、乙两人练习长跑，甲每秒跑8米，乙每秒跑7米，两人在相距60米的地方同时同向而行，多少秒后两人第一次相遇？
解：设x秒后相遇
依题意得
7x+60=8x
解得x=60
所以六十秒后两人第一次相遇

( C ) 1. I have a friend and she can’t read _______ write.
A. and B. but C. or D. so
( D ) 2. Jenny and Alice like ______________ together.
A. be B. to C. in D. to be
( A ) 3. Don’t sit between ______________________.
A. you and me B. you and I C. me and you D. I and you
( A ) 4. _______ your father ________ Hong Kong yet?
A. Has…been to B. Has…gone to C. Does…go D. will… go
( B ) 5. We’ll have a visit ____________ the Bund next week.
A. to B. in C. on D. from
( D ) 6. It’s raining outside, so our teacher tells us _____________ football.
A. don’t play B. doesn’t play C. to not play D. not to play
( C ) 7. The students __________ rubbish to look after the environment.
A. put up B. get up C. pick up D. look up
( D ) 8. Mum always keeps our bedroom ___________.
A. cleaning B. cleans C. to clean D. clean
( B ) 9. –What about a trip to Ocean Park? –___________________________.
A. I’m sorry. B. All right. C. Excuse me. D. Thank you.
( B ) 10. He has worker in Shanghai for _____________ hour.
A. the B. an C. a D. /

( A )1. ____ man over there is our new English teacher. He is ____ European.
A. The; an B. A; a C. A; / D. The; a
( B )2. Sheep are very important in our life. We can get wool ____ them.
A. from B. on C. in D. with
( D )3. “Help ____ to some chicken, boys and girls.” Mrs. Green said.
A. you B. Yours C. yourself D. yourselves
( B )4. Kitty is going to buy ____ for her new flat.
A. a furniture B. some furniture C. a piece furniture
D. some furnitures
( C )5. The Earth is our home. People should stop ____ it.
A. pollute B. Pollution C. polluting D. to pollute

Answer 2

1 图中的线段有AB=a AC=a+b AD=a+b+c AE=a+b+c+d AF=a+b+c+d+e BC=b BD=b+c BE=b+c+d BF=b+c+d+e CD=c CE=c+d CF=c+d+e DE=d DF=d+e EF=e,所以相加得到5a+8b+10c+8d+5e

2 以为长是8厘米，宽是长的3/4，所以宽是6厘米，因为高是宽的75%，所以高是4.5，所以表面积=2*（8*6 + 8*4.5 + 6*4.5）=222平方厘米

3 设较大角为X度，所以x-（90度-x）=15，x=52.5度
因为较大角是52.5度，所以它的补觉是127.5度
较小角是37.5度，所以它的补角是142.5度
所以差为15度

4 假设首相为-3/5,每两个数之间相差x则，-3/5 +4x=2/5 得到x=1/4,所以这三个数是-7/20 -1/10 3/20

5 假设每份是x千克 则甲为2x千克 乙为4x千克，丙为3x千克
2x+3x+4x=135 x=15
所以甲30千克 乙60千克 丙45千克

6 假设小丽今年x岁，那么妈妈 4x-2 岁，爸爸4x-2+5 岁
所以 x+4x-2+4x-2+5=100 x=11 所以妈妈42岁，爸爸47岁

7 由题意得到谷时段单价为0.3元/度
设平时段为x度
0.61x+0.3* 1/2x=100.32 x=132
所以平时段132度 谷时段66度

8 设x秒后相遇 7x+60=8x x=60所以六十秒后相遇

CDBABDCDBB

AADBC

Answer 3

1、LZ自己排一下
答案是5a+8b+9c+8d+5e
2、长8，宽6，高4.5
S=(8*6+8*4.5+6*4.5)*2=222
3、（1）a为较大角，b为小角
a+b=90
a-b=15
可得出a=52.5
a的补角c=180-52.5=127.5
（2）b的补角d=180-b
a的补角c=180-a
所以d-c=a-b=15
4、-12/20（-3/5) -7/20 -2/20 3/20 8/20(2/5）
（-3/5+2/5）/2=-1/10=-2/20
(-3/5-1/10)/2=-7/20
(-1/10+2/5)/2=3/20

Answer 4

我没看数学，只看了英语
BDAACDCDBB DACBC

我刚高考完

Answer 5

做这么多干嘛