And if one received a grape without having to provide her token in exchange at all, the other either tossed her own token at the researcher or out of the chamber, or refused to accept the slice of cucumber.

　　【析句】本句是一個是由if 引導的條件狀語從句，主句是the other slice of cucumber，其中包括三個并列的謂語成分，講述了猴子的三種反

　　應：一tossed her own token at the researcher，二(tossed her own token)out of the chamber，三refused to accept the slice

　　of cucumber。