问题
单项选择题
下列关于铁路货物运价的说法中，错误的是（）。
A.国家铁路货物运营价格，针对不同运输形式分为整车货物运价和零担货物运价两类
B.铁路建设基金，用于铁路基础设施建设
C..国家铁路新路新价全路均摊运费，专项用于部分新改建铁路项目还贷
D.国家铁路货运电力附加费，用于弥补电价上涨造成的铁路运输成本增支
答案
参考答案：A
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下列关于铁路货物运价的说法中，错误的是（）。
A.国家铁路货物运营价格，针对不同运输形式分为整车货物运价和零担货物运价两类
B.铁路建设基金，用于铁路基础设施建设
C..国家铁路新路新价全路均摊运费，专项用于部分新改建铁路项目还贷
D.国家铁路货运电力附加费，用于弥补电价上涨造成的铁路运输成本增支
参考答案：A
| The most popular organic gem is the pearl. A pearl is the response of a marine mollusk to the presence of an irritating impurity accidentally introduced into its body; a cultured pearl is the result of the intentional insertion of a mother-of-pearl bead into a live mollusk. Whether introduced accidentally or intentionally, the pearl-making process is the same: the mollusk coats the irritant with a substance called nacre. Nacre is composed chiefly of calcium carbonate. Because very few natural pearls are now on the market, most pearls used in free jewelry are cultured. These include "Biwa" pearls and most other freshwater pearls. Cultured pearls are not easily distinguished from natural pearls except by an expert. |
Cultured pearl is formed by ______.
A．insertion of a pearl into a live mollusk
B．an oyster into which a piece of grit has been placed
C．putting in a live mollusk
D．placing a bead into culture