GWD中一道关于and小并列的语法题~~

Helloface

41. GWD28-Q41:
During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution, involving the large-scale introduction of enclosed fields, of new farming techniques and crops, and the substitution of commercial for subsistence farming.

B. ! revolution, involved the large-scale introduction of enclosed fields and of new farming techniques and crops, and
D. revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops, and of
答案选B, D的并列哪里错了？？

silent7706

"new farming techniques and crops" 没有并列成分， 所以理解为"enclosed fields"的同位语，所以错误。