40岁以上结肠癌高危人群的指征为()
A．Ⅰ级家族史
B．肠道溃疡史
C．大便隐血阳性
D．精神创伤史
E．慢性阑尾炎史
参考答案：A, C, D, E
Our new house is very___________ for me as I can get to the office in five minutes
A．convenient
B．comfortable
C．natural
D．helpful
简述黛玉葬花的情节。
