57）A) A person's hair may reveal where they have lunch
58）B) Food and drink leave traces in one's body tissues
59）D) The water it delivers becomes slighter when it moves inland
60）C) A map showing the regional differences of tap water
61）D) It helps police narrow down possibilities in detective work作者: liujianfang3072 时间: 09-6-22 08:04
谢谢很快呀