A number of new machines were introduced from abroad， an increase in production.
A. resulted in
B. to result in
C. result in
D. resulting in
网友回答
A. resulted in
B. to result in
C. result in
(答案→)D. resulting in
解析：此题考查非谓语动词。这里是现在分词作结果状语。不定式和现在分词都可以作结果状语，不定式表示意想不到的结果，而现在分词表示意料之中的结果。