问题:计算:(-2)100+(-2)101的是()A 2100B-1C-2D -2100
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问题:已知y与4x-1成正比例,且当x=3时,y=6,写出y与x的函数关系式 ____。
问题:若点M(1+a,2b-1)在第三象限内,则点N(a-1,1-2b)点在第 ____象限;
问题:16.A.get toB.arriveC.reach inD.arrive to
问题:常用的投资估算方法有( )。A.生产能力指数法B.加权平均法C.资金周转率法D.比例估算法E.综合指标投资估算法
问题:老师给出一个函数,甲,乙各指出了这个函数的一个性质:甲:第一,三象限有它的图象;乙:在每个象限内,y随x的增大而减小.请你写一个满足上述性质的函数___________
问题:下面句子都运用了修辞手法,所用修辞手法与其他三句的不同的一项是( )A.水藻真绿,把终年贮蓄的绿色全拿出来了。B.而北首却有一个半里阔的空隙,故意张了口欢迎风的到来。C.松涛如吼,霜月当窗。D.况且那些长枝的垂柳还要在水里照个影儿呢!
问题:④不以物喜,________。(范仲淹《岳阳楼记》)
问题:点(-3,2),(a,a+1)在函数y=kx-1的图像上,则k= ,a=
问题:甲、乙两个蓄水池蓄满水后的水量都为120m3,已知甲池有水48m3,乙池装满了水,现甲开始进水,每小时进水8 m3,同时,乙池每小时放水10 m3.(1)甲池内的水量y甲(m3)与进水时间t(h)之间的函数关系式是什么?乙池内的水量y乙(m3)与放水时间t(h)之间的函数关系式是什么?(2)经过多少时间,两个池内的水一样多?
问题:Not all people like to work but everyone likes to play. All over the world men and women,boys and girls enjoy (21) . Since the days of long ago,adults(成年人) and children have called their friends together to spend (22) even days playing games.Sports help people to live(23 ) * They help to keep people healthy and feeling good.When they are playing games,people (24) a lot. This is good for their health. Having(25) with their friends makes them happy.Many people enjoy sports by watching others (26).In small towns,crowds(人群) meet to watch the bicycle races or the soccer games. In big cities,thousands of people (27) to see an ice-skating show or a baseball game.What are your favorite sports? Is the weather (28) where you live? Then swimming is probably one of your sports. Boys and girls in China love to (29). There are wonderful bea-ches and there are beautiful (30) and lakes across the country. The weather is also good for swimming.( )21.A.musicB.moviesC.sportsD.trips
问题:What was Jack Scott in the passage? __________ .A. He was a pilot B. He was a policeman at the airport C. He was an engineer
问题:20.A. onB. offC. upD. around
问题:已知m是整数,且一次函数y=(m+4)x+m+2的图象不过第二象限,则m= ;
问题:Nyloncameoutoffiveyearslaterthan.A.radioB.cameraC.jetplanesD.movies
问题:(2)滤出沉淀后所得溶液的溶质质量分数。(精确到0.01%)
问题:一个正方体木块的体积为1000厘米³,现要把它锯成八块,同样大小的正方体小木块,小木块的棱长是多少?
问题:直线y=2x-3向下平移4个单位可得直线y=______________,再向左平移2个单位可得直线y=_______________
问题:已知一次函数的图象经过点A(2,1),B(-1,-3)(1)求此一次函数的解析式;(2)求此一次函数的图象与x轴、y轴的交点坐标;(3)求此一次函数的图象与两坐标轴所围成的三角形面积。
问题:李丽从家到学校的路程为s,无风时她以平均a米/秒的速度骑车,便能按时到达,当风速为b米/秒时,她若顶风按时到校,请用代数式表示她必须提前 出发.