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- 1填入单词中空缺的字母
- 2给句子换个说法,但不改变原句意思
- 3现有浓度为30%的糖水100克,要得到浓度为10%的糖水,需要加水多少克
- 4水结成冰,体积增加十分之一,一块体积是2.2立方米的冰,融化成水后的体积是多少立方米?
- 5有一重为500N的物体在200N的水平拉力作用下,在一水平面上做匀速直线运动.问:(1):物体受到的摩擦力是多大?(2):如果拉力为80N,此时物体将做什么运动?物体受到的合力多大?
- 6一道英文数学提!janet is three times as old as her daughter,mary.five years ago jant was four times
- 7the fact that people from all walks of life are
- 8如图,数轴上AB两点对应的实数分别是1和√5.若点A关于点B的对称点为点C则点C所对应的实数为
- 9She can sing.改为否定句She( )sing( ).括号内一个单词
- 10you are home they are gone and the time seems really