A. 贵重金属里包括黄金、白银和货币。B. 诸如黄金和白银等这类贵重金属曾经作为货币使用过。C. 贵重金属里的……

判断题Legal protection on a brand comes into force only after registration.

判断题The trademark symbols TM and ? can be exchanged in a brand.

判断题A trademark may be regarded as a protection for a brand name.

判断题According to the writer, it is not necessary for a company to register a trademark,

单项选择题According to the writer，accounting is（）.

A. a language of business
B. your sales figures, your costs, and your profits
C. Both A and B