A:由于液体的表面张力使表面层内液体分子间的平均距离小于r0
B:由于液体的表面张力使表面层内液体分子间的平均距离大于r0
C:产生表面张力的原因是表面层内液体分子间只有引力没有斥力
D:表面张力使液体的表面有收缩的趋势
—What language does your QQ friend speak?
—She _______ speak English and a little Chinese, but now she _______ with me in Chinese.
某地所做的一项调查显示,有近40%的家庭“三无一有”:无文学书、无杂志、无报纸,有电视。大人和小孩每天一块看电视的时间可能超过一个小时,一起读书的时间却不到十五分钟。
建议
During the summer holiday,Alice had a nice trip.First she took a plane from Changchun to Beijing.She went to the Great Wall.She was very tired.But she was happy.She likes Beijing very much.Then she went to London by plane.She visited Big Ben,the clock tower.There were many museums in London.She learnt a lot there.People in London love eating fish and chips.She stayed in London for 5 days.Then she took a plane to Shanghai.Then she went to Changchun by plane.
根据短文,判断正误。
12的倒数为( )