A:five six nine two zero
B:five nine six two zero
C:five six two nine zero
D:four six nine two zero
①图一现象出现的根源是近代社会的特殊国情
②图二反映新中国优先发展重工业取得的成果
③图一表明中国近代工业在经济中占主导地位
④图一图二表明政府长期重视民生工业的发展
This duckling is big and grey. He is very u____.