题目内容:
According to the passage, the use of other metals in gold alloys________
Ⅰ.can be used to make the gold different color
Ⅱ.makes jewelry more expensive
Ⅲ.makes gold more flexible A.I only
B.I and Ⅱ only
C.Ⅱ and Ⅲ only
D.I , Ⅱ ,and Ⅲ
参考答案:
答案解析: