Theothertimingsystembelongsinourinternalclocks，which，left________，wouldtiethebodytoa25-hourrhythm.
A、behindB
译文：更不用说，另一个定时系统在我们的人体时钟内，它会使人保持在一个 25 小时的生理节奏上。此题考查关于 leave 的短语。 leave behind意为“留下， 放弃”，leave alone 意为“更不用说” 。 leave out 意为“遗漏，忽视”。
Younger children are curious ________ how things work ，and many of them want to take apart everything within their reach.
_______forthefreeticket,Iwouldnothavegonetoseefilmsooften.
______ofasentencedependsonthecontextinwhichthesentenceisuttered.
Thisisanimportantproblem_______toofewsocialscientistshaveresearched.
The conclusion from the study is not definite; it is just ________.
