“一带一路”建设的社会根基是（）。
A、投资贸易合作
B、民心相通
C、资金融通
D、基础设施互联互通
参考答案：B
He was so helpful that we ____ him as direct.[ ]
A. chose
B. found
C. elected
D. put
笔算加、减法时，要把（ ）数位对齐，从（ ）位算起。
