according to a recent study,animals in the wild have life spans------their relatives in zoos
问题描述：
according to a recent study,animals in the wild have life spans------their relatives in zoos
a twice those or more of b twice that or more of
c that twice or of more d that twice or more of
选哪个 为什么
答
d
凭语感猜出来的,可答案是A哦，看来我退化了已经……不好意思额……