To improve your English reading， you should， first of all， choose something you feel important or interesting to read. Don't try to read everything. You should begin with those written in simple English. Don't read those which prove difficult for you at the very beginning.
While reading描写校园的作文， don't read too slowly or look up every new word you meet with. After reading a passage and having its main idea in mind， you may turn back and read it again. This time you read it slowly and look up some new words if necessary.
Keep on reading in this way and you'll surely make progress little by little.