is the special kind of food for the Spring Festival in China.
A. Chicken B. Dumpling C. Fish
A. Chicken B. Dumpling C. Fish
已知-a<b<-c<0<-d,且|d|<|c|,a,b,c,d,0这五个数由大到小用“>”依次排列为()
A.a>b>c>0>dB.a>0>d>c>bC.a>c>0>d>bD.a>d>c>0>b
A.a>b>c>0>dB.a>0>d>c>bC.a>c>0>d>bD.a>d>c>0>b
He had meant to tour the deserted temple for ______ fun but he didn’t find ______ fun for doing that.
A. /;/B. /; theC. the; theD. a; the
A. /;/B. /; theC. the; theD. a; the
解方程(1)11-3x-32=23x-1(2)xx+2-x+2x-2=8x2-4.
计算(1)(-2ab2)3(2)(3a2b-ab2)÷12ab(3)327-(3.14-π)0(4)|2-3|+22.
当x=______时,代数式3(x+2)与2x+7的值相等.
若x-1x=1,则x2-3x+1的值为______.
一枝铅笔原价为a元,若降价10%,则现在买一枝铅笔应付______元.
减缓温室气体排放是2009年哥本哈根气候变化会议的议题。下列反应不产生温室气体的是
A.用纯碱制玻璃B.用煤炭作燃料C.用铁矿石炼铁D.用氨制碳酸铵
A.用纯碱制玻璃B.用煤炭作燃料C.用铁矿石炼铁D.用氨制碳酸铵
多项式4xy2-3xy3+12中次数最高项的次数和系数分别为()
A.2和4B.3和4C.3和3D.4和-3
A.2和4B.3和4C.3和3D.4和-3
借助数轴,求出下列不等式组的解集,然后看能总结出什么规律:(1)x>3x>1(2)x<3x<1(3)x>1x<3(4)x>3x<1
在下列方程中,其中二元一次方程的个数是()①4x+5=1;②3x-2y=1;③3x+y3=1;④xy+y=14
A.1B.2C.3D.4
A.1B.2C.3D.4
如果(m+2)x|m|﹣1+8=0是一元一次方程,则m=().
下列计算正确的是()
A.(x+y)(x-y)=x2-y2B.(-x+2y)2=-x2-4xy+4y2C.(2x-12y)2=4x2-xy+14y2D.(-3x-2y)2=9x2-12xy+4y2
A.(x+y)(x-y)=x2-y2B.(-x+2y)2=-x2-4xy+4y2C.(2x-12y)2=4x2-xy+14y2D.(-3x-2y)2=9x2-12xy+4y2
2008年春季学期以来,我省城乡义务教育阶段学生全部得到了免费提供的课本.今年全省义务教育阶段720万名学生,免除学杂费和课本费后家长共减负29亿元.用科学记数法表示29亿元的结果是______元.
Police are now searching for a woman who is reported to ____ since the flood hit the area last Friday.
A. have been missingB. have got lostC. be missingD. get lost
A. have been missingB. have got lostC. be missingD. get lost
太阳的半径约为696000km,把696000这个数用科学记数法表示为
A.6.96×103B.69.6×105C.6.96×105D.6.96×106
A.6.96×103B.69.6×105C.6.96×105D.6.96×106
最小的整数是[]
A.1B.0C.﹣1D.不存在
A.1B.0C.﹣1D.不存在
45________.
A.worksenoughB.enoughworksC.workenoughD.enoughwork
A.worksenoughB.enoughworksC.workenoughD.enoughwork
_____ scores of times ,but hestill couldn’t understand it .A Having explainedB Having been explainedC Though it was explainedD Itwas explained