2010 山东 第 81 题 单选题 区分题 2010_山东卷 (英语) 72．Jae Kwon gave examples in Paragraph 4 ． A. to show chemical batteries are widely appliedB. to indicate nuclear batteries can be safely usedC. to describe a nuclear﹣powered systemD. to introduce various energy sources． 参考答案B ☆ 收藏不会，直接看解析查看原卷 →