社会上一些不法分子以铜锌合金(金黄色,俗称黄铜)假冒黄金进行诈骗活动,为了鉴别黄 发布时间:2017-06-15 15:50 │ 来源:www.tikuol.com 题型:选择题 问题: 社会上一些不法分子以铜锌合金(金黄色,俗称黄铜)假冒黄金进行诈骗活动,为了鉴别黄铜和黄金,以下方法可行的是 [ ]A. 观察颜色 B. 放在水中 C. 加稀硫酸 D. 磁铁吸引
题型:选择题 Of all ___ reasons for my decision to go abroad, my father’s advice was ___ very important one.A.the; /B.the; theC./; theD.the; a 查看答案
题型:选择题 Many years later, the father returned form the army and found that his daughter was no longer ________ she used to be. [ ]A. what B. how C. when D. whom 查看答案