（revision ii 单元检测）学习目标：通过练习再现本单元重点单词 重点短语，提高做题能力。学法指导：在词汇学习的基础上，根据提示写出相应单词，结合你所掌握的知识完成练习部分的内容。 i. 单项选择 1. fruit juice can be harmful _______ children’s teeth. a. for b. toward c. with d. to 2. sugar is not an important element in bread, but flour is _______. a. unique b. essential c. natural d. adequate
