Our data allow us to speculate and presume that the ( ) effect of GM soya on the newborn pups could be explained by two possible factors.
A.negative B.negatively C.negation D.negativity正确答案A
Our data allow us to speculate and presume that the ( ) effect of GM soya on the newborn pups could be explained by two possible factors.
A.negative B.negatively C.negation D.negativity正确答案A