海浪干扰在扫描起始点周围形成()
A.辐射状点线
B.鱼鳞状闪亮随机回波斑点
C.无明显边缘的疏松棉絮状的亮斑区
D.密集点状回波群
参考答案:B
—Peter has changed a lot, hasn't he?
—Yes. He used to _____ the guitar,but now he is more _____ in playing soccer.
A. plays; interested
B. play; interested
C. play; interesting
D. playing; interest
革命根据地的基本经验不包括( )
A.教育为政治服务
B.教育与生产劳动相结合
C.依靠群众办学
D.教育受制于政治经济