Experts at the conference agreed that such a product with environmentally friendly technology is ______.

A.worth being promoted

B.worthy promoting

C.worthy of promoting

D.worthy of being promoted

答案及解析： D

这题考查worthy的用法：be worthy of being done或be worthy to be done“值得被做”，句意是：到会的专家同意这样环保的产品应该推广。选D。