International not-for-profit trade association with 50 corporate members resided in 20 countries who produce 95 percent of the world supply of 【synthetic】 rubber.
A.productive B.artificial C.tropical D.artistic正确答案B
International not-for-profit trade association with 50 corporate members resided in 20 countries who produce 95 percent of the world supply of 【synthetic】 rubber.
A.productive B.artificial C.tropical D.artistic正确答案B
