社会主义建设总路线通过于（）。
A.中共八大一次会议
B.中共八大二次会议
C.八届二中全会
D.八届三中全会
参考答案：B
______was known to them all that William had broken his promise______ he would give each of them a gift.
A．As, which
B．What, that
C．It , that
D．It , which
波峰焊接前需要检查（）
A.焊料氧化膜
B.桥连接
C.设备的运行情况
D.焊接质量
