婚前医学检查主要检查的疾病是是哪些？
参考答案：
严重遗传性疾病，指定传染病，有关精神病。
— How was your trip?
— Fine but _____. Milan was interesting. It's bigger than I expected, however a little _____ and dirtier. [ ]
A. disturbing; clumsier
B. tiring; noisier
C. boring; duller
D. freezing; brighter
预防网络成瘾的最好方法是（）
A.加强正面引导
B.形成对互联网的正确认识
C.提高青少年自身综合素质
D.认知——行为疗法
