实验

Today is Monday; I wake up at 6 o’clock in the morning. Then I have my breakfast at home and take the subway to school.

“Score is not equal to knowledge,” my head teacher always keeps telling me this, because he wants us to master all the knowledge we need to understand.

世界不仅饥饿，也渴。这可能听起来很奇怪，因为近 70 的地球表面的百分之，由水覆盖着。但是大约 90 本是海水百分之。人与动物的大部分只能饮用，使用的水，其余百分之 - 新鲜水 water.The 的需求与日俱增。只有采取措施来处理这个问题立即才能避免严重的全