刘星同学的质量为50 （Kg/g/mg），则他的体重为 N，重力的施力物体是。
题型：填空题
问题：
刘星同学的质量为50 （Kg/g/mg），则他的体重为 N，重力的施力物体是 。
题型：填空题
Today I felt very u  ncomfortable studying English as usual．My eyes were 36 and my mind was confused．I buried my head deep in the great pile of books．Many vocabulary words 37 my mind．As more and more entered，I 38 focus，and my 39 became crazy．The clock hands were pointing at twelve. I always 40 the time when I study．Without any fruitful results，I felt more 41 and tired．I 42 up and walked to the living room just to take a little break． 43 that would make me feel better．The street lamps looked like stars outside the window．A few scattered(分散的)branches 44 shadows on the French window．Something seemed more 45 and quiet than before．I walked to the 46 slowly，and let my face press against it， 47 very carefully …oh my God!!…It’s snow! It was very bright and covered up the whole 48 while I was studying English painfully, so white and so quiet．At this moment, I was so 49 that I felt like I might burst into tears．The snow was like a spring 50 into my heart，and my eyes were shining with it．All my pain and tiredness 51 at this moment，as the snow dropped into my heart．I quickly became calm again as the excitement went away．I sat on the bed silently，and drew the 52 to one side to let the white house and white tree stay just beside my bed．I thought this must be a(n) 53 from God，because I liked snow so much． 54 I was weakest and most helpless in this world，nothing could inspire me but 55 ．I should inspire myself from such a beautiful scene．
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