一个长方体玻璃缸，从里面量长20厘米，宽15厘米，高12厘米.缸里装有水，把一个棱长6厘米的正方体石块放入水中（完全浸没），水面将升高多少厘米？

“日本臣民得在中国通商口岸、城邑任便从事各项工艺制造。”这一内容出自（    ）

根据短文内容，从下面方框中选择适当的词或词组填空。                       

     Chinese kung fu has already taken the central stage in the sports world.____ foreign pioneers are starting to learn it. They____ it because kung fu can nurse a person’s body and mind. By practicing it, people can find the peace from the heart and they can face the world more bravely____ . There are lessons for kids between 5 and 16 in more and more foreign Chinese kung fu schools. Kung fu can____ children's self-confidence. At the same time, they can learn to____ difficult situations with bad strangers.

too____ no ____ son ____ by ____ who's  ____