→作文｜A girl who just graduated in an American high school was chosed to be the spokeman of the students in the graduation ceremony. She…〔09-29〕

  →作文｜We live in the earth, there is water around the surface of the earth, we can’t live without water. We drink water everyday,…〔04-11〕

  →作文｜With the intensification of human activities, the ozone layer of the earth's surface appears serious hole. Maybe ozone layer is ab…〔09-13〕

  →范文｜Almost everyone knows that water covers three-fourths of the earth's surface. Most of it， however， is in the oceans and is too sal…〔02-07〕

  →英语｜Water pollution is a serious problem now. Hundres of dead fish can be found on the surface of Haihe beeause of serious pollution.…〔11-30〕