Much new high technology has been introduced from America a great increase in the produc

问题补充：

Much new high technology has been introduced from America, a great increase in the production of the company.

A. resulting in

B. having led to

C. contributed to

D. caused

答案：

(答案→)A. resulting in

B. having led to

C. contributed to

D. caused

解析：考查非谓语动词。句意：从美国引进的多种高新技术，导致了这个公司产品的大幅增长。现在分词表示主语正在进行的伴随性动作，如果动作发生在主语动作之前则用完成时态的现在分词，结合语境可知选A。