城市低保户申请采暖补贴时需提供要件包括()
A.房证四证复印件
B.身份证
C.户口本
D.低保证
参考答案:A, B, C, D
A big crowd gathered _____ him ______.
A.to hear ; speak
B.hearing ; speaking
C.to hear ; speaking
D.hearing ; to speak
试述“阳微阴弦”的含义。