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
正确答案是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
正确答案是B