There are many kinds of metals, _________.
A、each having its special properties
B、having its special properties
C、one has its special properties
D、each has its special properties
【正确答案】：A
【题目解析】：each having its special properties 在句子中作状语，是一个复合结构。里面的having 是现在分词，可以理解为 (with)each having its special properties,是with的复合结构。 而如果要用D的话，必须在前面加一个连词and。