Which statement was more forceful

A．"Global temperature will rise by 2100 between 1.4℃ and 5.8℃".

B．"Temperature rises are expected to affect countries throughout the world".

C．"Most of the warming is likely to be attributable to human activities".

D．There was a "discernible human influence on the climate".

反转录病毒在分子生物学研究和基因治疗中起到重要作用的是（）。

A.基因传导载体

B.基因修饰载体

C.基因表达载体

D.基因转移载体

E.基因载体