题目

小明想知道油的密度，于是他和小华用天平和量筒做了如下实验： （1）将天平放在______ 工作台上，将游码放在______ 处，若发现指针指在分度盘的右侧，要使横梁平衡，应将______ ．（2）用天平测出空烧杯的质量为17g，在烧杯中倒入适量的酱油，测出烧杯和酱油的总质量如同甲所示，将烧杯中的酱油全部倒入量筒中，酱油的体积如图乙所示，则烧杯中酱油的质量为______ g，酱油的密度为______ ．小明用这种方法测出的酱油密度会______ 填“偏大”或“偏 用方框内单词的适当形式填空, 每词只能用一次。 read  talk  swim  play  wear  sing  listen to  hear  watch  help1.In class we        the teacher when she reads the text. ?2.Tony likes music and he likes        . ?3.Be quiet!Can you        someone is singing a song? ?4.Betty always        the piano on weekends. ?5.Tom's aunt always        T ?shirts. ?6.Let's        this magazine. ?7.Daming usually        to his classmates. ?8.Amy is going to        in the lake. ?9.The family like        TV at home together. ?10.Li Lei always        others as Lei Feng. ??