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it's soooooo common that u need to wait for 3 runs before u can get on board.
I'll be there when you want me Some way, soooooome how 'Cause baby,There ain't no mountain high enough Ain't no valley low enough Ain't no river wide enough To keep me from getting to you No wind (no wind) , no rain (no rain){Ohhhh..ooh ooh ooh} My love is al...
把宇航员从月球上带回来的四种尘土化验一下,结果使人感到月球还有许多的谜。把月球尘土撒在细菌上做实验:第一种、第二种、第三种尘土撒到细菌上,细菌一点变化也没有;第四种尘土撒到细菌上,细菌一下子都死了。第四种尘土是美国阿波罗飞船12号从月球表土的下层取回来的。它怎么会有特殊的杀菌力呢...
三、wish, hope都可作名词,可数或不可数均可,wish表示"愿望""心愿""祝愿",hope表示"希望"。 1. My wish is to become a doctor. 我的愿望是当一名医生。 2. It is said that they have realized their wishes. 据说他们已实现了他们的愿望。 3. I have no (not much) wish to see him. 我并不(...
解:AB=根号(4方+8方)=4根号5。则AD=2根号5 。则P点在AD上运动的时间=AD/根号5=2(秒)当N落在AB上时,正方形的边长PN=PQ=二分之一BC=2 。即P点在DE上行走了时间=PN/1=2(秒)。则总时间2+2=4秒时N落在AB上 第二次是P点在BE上时 当P在BE上行走2/3秒时。总时间为tAD+tDE...
^3+(lg5)^3+3lg2lg5 =(lg2+lg5)[(lg2)^2-lg2lg5+(lg5)^2]+3lg2lg5 =1*[(lg2)^2-lg2lg5+(lg5)^2]+3lg2lg5 =(lg2)^2+2lg2lg5+(lg5)^2 =(lg2+lg5)^2 =1 注:lg2+lg5=lg10=1 (lg2)^3+(lg5)^3(立方差)=(lg2+lg5)[(lg2)^2-lg2lg5+(lg5)^2]