精选优质文档-倾情为你奉上选修7 Unit 2 课下作业（一三）课下作业（一） 考点过关针对练.单词拼写1One day, the chemist (化学家) dissolved some material in hot water.2What she possesses (拥有) is the ability to get straight to the core of a problem.3We are aware of the potential (潜在的) problems and have taken every precaution (预防)4In my mind, switching from coal to gas is a good decision, which is beneficial (有益的) to energy conservation and environment protection.5Poor educational performance is related (有关的) to em
