Unit Two 一、Working with words and Expressiongs1.1)A lot of chidren are near-sighted .We cannot emphasize the importance of protecting our eyes too much.2)Their experiment stretched over aperiod of ten years .At last ,their efforts paid off.3)Communication is the only remedy against conflict within the family.4)Youd better confine yoursummary to the main idea;dont try to talk about the trivial things.5)Truly remarkable progress has been made in a short period of time ,which is
