题目

下列说法正确的个数有---------------------------------------------------------------------（     ） ①在数轴上表示正数的点在原点的右边；   ②平方后等于9的数是3； ③倒数等于本身的数有1，－l；          ④与2是同类项；   A．1个              B．2个                   C．3个          D．4个_____ , his idea was accepted by all the people at the meeting.A．Strange as might if soundB．As it might sound strange C．As strange it might sound D．Strange as it might sound