For theme parks, ______ is the key to _____ visitors, which contributes to the success of running them.
A.the variety; attracting
B.A variety; attract
C.Variety; attracting;
D.Variety; to attract
网友回答
C解析第一空考查variety“多样化”，第二空考查词组：the key to doing“做..的关键”.句意是：对主题公园来说，多样化是吸引游客的关键，这可以促使成功的经营。选C。