→作文｜Aerobic exercise is a series of activities which can improve our heart-lung function by maintaining longer, including running, bic…〔06-24〕

  →作文｜It’s well known that smoking is bad for our health. It does much harm to our lung. Smoking too much is very easy to get canc…〔03-15〕

  →小学｜My favourite school subjects are social studies and science. Next week we are going to dissect a sheep's lung in science class. I…〔08-30〕

  →作文｜Smoking has proved to be closely linked to many of the most fatal diseases such as cancer, heart problems, and lung diseases. Doct…〔02-10〕