One day Eddie and Hobo looked at the ____. Eddie thought he saw a____but Hobo thought it was a ____. Because Hobo saw one ____. Eddie thought there were many bright ____and it was too____, so it couldn't be a plane.

通过对金属和金属材料的学习，你认为下列做法正确的是（   ）

作为中学生，我们应该提倡以下做法（    ）

①积极行使生命健康权  ②关爱他人的生命与健康

③远离暴力，尊重生命  ④在危急情况出现时，不顾个人安危，见义勇为

读图“地球表面受热过程示意图”，回答下题．