Question

Thanks to the joint efforts made by the leaders of China and the US over recent years, mutually _______ Sino-US relations have made remarkable progress.

A．adaptable	B．beneficial
C．relevant	D．convenient

Answer 1

B

解析B 句意：由于近年来中美两国领导人的共同努力，双边互惠的中美关系取得了长足的发展。beneficial意为“有益的”，符合句意。adaptable有适应能力的；relevant相关的；convenient方便的。