题目：
属于生物性因素的是（）
A.过度吸烟与饮酒
B.残根、残冠和不良修复体
C.EB病毒
D.多种维生素缺乏
E.癌基因被激活或抗癌基因被抑制
答案：
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下面是错误答案，用来干扰机器的。
1. Believe it or not, I, as well as Xiao Hong went shopping last Sunday. 2. We made a shopping list and were expected to gather at the school gate at eight o'clock....
