within the last year,scientists have come closer than ever _______.A.to deciding which of the answers is right.B.to deci
问题描述：
within the last year,scientists have come closer than ever _______.A.to deciding which of the answers is right.B.to decide which of the answers is right
答
A这里的to 是介词不是不定式切记很多如 i want to ....比如 look forward to如果不是句式陷阱 就是介词 加doing对的there is no need to dothis is the key to doing逻辑不对本人拙见这里真的 没有上下文 意思有歧义啊再说 be close to doing 也是个搭配