At the Qiantang River on September 24^th last year, the tidal bore, a name for a large column of water produced by the tide, _____ as high as 1．9 metres,       the start of the autumn flood period of the liver．

A．reaching marking

B．reached; to mark

C．reaching; to mark

D．reached; marking

中华人民共和国的国徽呈圆形，图案由国旗、 * * 、齿轮和麦穗组成。