In order to understand the ( ) of how this widely consumed GM crop exerts its influence on the reproductive performance of mammals, it would be necessary to perform complex research.
A.mechanic B.mechanism C.mechanics D.mechanical正确答案B
In order to understand the ( ) of how this widely consumed GM crop exerts its influence on the reproductive performance of mammals, it would be necessary to perform complex research.
A.mechanic B.mechanism C.mechanics D.mechanical正确答案B
