樓主夠毒——————好吧 .,反正也沒啥事 《步驟簡(jiǎn)略些 NO介意吧
( C ) 4.---Have you bought some fruit for your friends?
---Yes,I .
A.do B.did C.have D.had
( B ) 5.---Would you like cabbage tomatoes?
--- Both.
A.and B.or C.with D.but
( C ) 6.What would you like for tonight?
A.tea B.breakfast C.dinner D.lunch
( B ) 7.--Can I have a look at dinner menu?-- Certainly.
A.tomorrow B.today’s C.today D.todays’
( C ) 8.He some meat today.
A.like eating B.would like to C.would like D.have had
( C ) 9.Let’s the menu first.
A.have a look B.look C.have a look at D.see
( B ) 10.There are many things in the supermarket.will you go to first?
A.Where B.Which section C.What D.When
判斷 T F
A father asks him son “How many letters are there in the Alphabet?” “I don't know,” says his son.His father says,“You don't know?You are in school for many years and you don't know how many letters are there in the Alphabet?” He is very angry.
His son says,“No.But let me ask you a question,Dad.You often go to the post office,please tell me how many letters are there in the post office?”
( F )1.From the story,we know the son is good at English.
( T )2.The son studies at school over one year.
( F )3.The father gets angry because his son is not polite to him.
( F )4.The father knows how many letters there are in the post office.
( F )5.There are twenty-six letters in the Alphabet.
1、長(zhǎng)方體的長(zhǎng)、寬、高之比是4：3：2,棱長(zhǎng)的總和是108厘米,求這個(gè)長(zhǎng)方體的體積.
設(shè)長(zhǎng)寬高分別為4x 3x 2x
(4x+3x+2x)x4=108
x=3
4x=12 3x=9 2x=6
體積為 12x9x6=648立法厘米
2、計(jì)算：35°41′30〃+24°18′35〃
=60°5〃
3、B、C兩點(diǎn)把線段AD分成2:3:4三部分,M是線段AD的中點(diǎn),CD=12厘米,求（1）MC的長(zhǎng)；
由已知可得 AD=12÷（4/9）=27
MC=27X(1/18)=3/2
（2）AB:BM的值.
AB:BM=6:13.5=14:27
4、小明看一本課外讀物,第一天看了全書的3分之1少1頁(yè),還剩下49頁(yè)未看,那么,第二天應(yīng)從第幾頁(yè)看起?
共有（49+1）÷（2/3）=75頁(yè)
75x(1/3)=25
應(yīng)從第25頁(yè)開始
9、長(zhǎng)方形的長(zhǎng)為x+3,寬為5,它的面積小于20.求x的取值范圍.
（x+3)x5＜20
0＜ x＜1
10、小杰、小明兩人同時(shí)繞400米的環(huán)跑道行走,已知小杰比小明速度快,如果他們同時(shí)由同一點(diǎn)同向而行12分30秒首次相遇,如果他們同時(shí)從同一點(diǎn)起背向而行2分首次相遇,求小杰,小明兩人每分鐘各走多少米?
設(shè)小杰的速度是x米∕分,小明為y米∕分,由題可得：
(x-y)×12.5=400
（x＋y)×2=400
經(jīng)計(jì)算可得：
x=116 y=84
11、計(jì)算：2的 100次方 – 2 的99次方 – 2 的98次方 – 2的 97次方 - … … - 2 的3次方 – 2的2次方 – 2 – 1
2的N+1次方=2*2的N次方,所以減到最后是《1》
12、已知∠ a的余角比∠a 的2倍還大15°,求a 的補(bǔ)角的度數(shù).
解;設(shè)∠a=x
90-x=2x+15
x=35
a 的補(bǔ)角的度數(shù)為145°
13、把一個(gè)3個(gè)棱長(zhǎng)為2厘米的正方體拼成一個(gè)長(zhǎng)方體,求其表面積和體積.
只能并排拼,那就會(huì)有4個(gè)面被擋住,而一個(gè)正方形有6個(gè)面,3個(gè)就是18個(gè)面,所以只有14個(gè)面能看到,而一個(gè)面是2*2=4cm的平方,則表面積就是4*14=56cm的平方
一個(gè)正方形的體積是2*2*2=8cm的立方,三個(gè)正方形的體積即此長(zhǎng)方形的體積=3*8=24cm的立方
14、計(jì)算：180°－（25°32′+ 62°18′）
=92°10′
15、甲、乙、丙三人同時(shí)從同一地點(diǎn)O出發(fā),甲沿北偏東30°方向走了4千米 到達(dá)A地,乙沿南偏西30°方向走了3千米到達(dá)B地,丙沿南偏東60°方向走了3千米到達(dá)C地.取1cm表示1千米,在紙上描出A、B、C三地的點(diǎn).
這道題 你自己畫吧
在紙上畫一個(gè)直角坐標(biāo)系
要標(biāo)明度數(shù)呦
16、已知x是相反數(shù)等于它本身的數(shù),y是最大的負(fù)整數(shù),求 xy+x分之y+3x+2y的值
x=0 y=-1 值為=-2
17、某部隊(duì)一次行軍訓(xùn)練,限定3.5小時(shí)內(nèi)完成,其間休息15分鐘,去時(shí)的速度是每小時(shí)7千米,回來時(shí)的速度是每小時(shí)6千米,問隊(duì)伍最遠(yuǎn)走多少千米就得返回?
設(shè)x千米必須返回,(x/7)+15/60+(x/6)≤3.5 ,
解得 x=10.5（千米）.
《《不考慮加分么——————