英语竞赛智力题What object has keys that open no locks,space but no

英语竞赛智力题What object has keys that open no locks,space but no 英语竞赛智力题,急求What object has keys that open no locks,space but Can you find something which has keys that open no locks,wit space has no particles so space is a what What has teeth but cannot eat?(竞赛智力题） 英语脑筋急转弯What has hands but no feet,a face but no eyes,tell bu 用英语回答 What has a neck but no throat?What has an eye but can' what has four legs but no foot What can walk but has no legs? what has a neck but no throat What has a neck but no head What has a neck ,but no