题目

阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 Earthquakes strikesuddenly at any time of the day or night, but there's no way to tell when. Ifan earthquake happens, it may cause many deaths, injuries and damage. So youneed a good preparation ahead of time. Decide how and where your family willget together if separated. Choose an out-of-state friend or relative that thefamily members can call after the quake to report where they are and how theyare. Know the safe places in each room: under the strong tables, desks, oragainst inside walls. Keep enough food, “大树底下好乘凉”说明 [　　] A． 环境影响生物的生存 B． 生物都能适应环境 C． 生物能够影响环境 D． 生物和非生物因素紧密不分