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A.one and a half year`sB.a year and a half`sC.one and a half yearD.a year and a half的区别和用法A.one and a half year`sB.a year and a half`s 英语

.one and a hal

列句：He bought a house last year.Did he buy a house last year?He didn't buy a house last year.列句：He bought a house last year.Did he buy 英语

house last ye

My uncle went to China last year.We haven't seen him__.A.since almost year为什么选B?A.since almost a year B.since almost a year ago.C.afte 英语

almost a year

初三英语任务阅读The Spring Festival is our Chinese people's festival.There are different names for each Chinese year.We call it the year of sh 英语

ep,the year of

若按现行公历倒推,公元前的闰年怎么算?0){if((year%4==0&&year%100=0)||year%400==0){monthLength[1]=29;}}elseif(yearif((abs(year)%4==1&&abs(year)%3200=1)||a 数学

year ) % 4 ==

1.-1998/1999-1999/2000-2000/2001按大小排列2.1/1x2+1/2x3+1/3x4+····+1/99+100=?3.同一平面内有直线a1,a2a3,a4,a5,a6···a100,如果a1⊥a2,a2‖a3,a3⊥a4,a4‖a5··· 数学

⊥a4 ,a4 ‖a5 ·

一：古希腊数学家把数1,3,6,10,15,21...叫做三角形数,它有一定的规律,若把第一个三角形数记为A1,第二三角形数记为A2.第n个三角形数记为An,计算a2-a1,a3-a2,a-a3.并由此推算出⑴a100-a99 ⑵a100【麻烦数学

P在数轴上,先向右移动4个单

在一个平面内有直线A1,A2.A100,如果A1‖A2 A2⊥A3 A3‖A4 A4⊥A5那么A1与A99关系,A1与A100的关系数学

设一列书a1、a2、a3、…、a100中任意三个相邻数之和都是37,已知a2=25,a9=2x,a99=3—x,那么a100=?各位帮帮忙,谢谢啦! 数学

设一列数a1、a2、a3、···、a100中任意三个相邻数之和都是37,已知a2=25,a9=2x,a99=3-x,那么a100=? 数学

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