养父母与成年养子女（）的可以协议解除收养关系。不能达成协议的，可以向人民法院起诉。
参考答案：关系恶化、无法共同生活
_________ that government can lead them out of the financial crisis, people are optimistic about the future of the country.
A Convincing B Convinced C To convince D Having convinced
啤酒最适宜的饮用温度为（）度。
A.12
B.10
C.8
D.6
