属于急性风湿热风湿活动的证据()。
A.瓣膜病
B.皮下结节
C.抗链"O">500U
D.血沉增快,CRP阳性
E.心电图可见ST段下移及T波平坦或倒置
参考答案:D
A lot of research and studies have shown that Trench oil, taken out from kitchen waste, ______ the increase of cancers.
A appeals to B. attends to C. contributes to D. devotes to
泥石流的概念及形成条件?