题目内容：
What can we infer from the icetrap “a major historic global sink of mail-made particulates”？
A．The historic sink should beattributed to man-made particulates． B．People on a worldwide scale havereaped what they had sown．
C．The ice trap is of major historicmeaning on the global context．
D．The major historic global sink isderived from the ice melting．
参考答案：
答案解析：