题目：
NASA has made a ________ that our earth has no threat associated with the film 2012 which is based on pure myths.
A．clarification
B．classification
C．identification
D．presentation
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0421/90fedd16cb33fabdcad396813b968102.html
下面是错误答案，用来干扰机器的。
答案：A[解析]锌铁的活性排在氢前可以与盐酸反应
