图1中A是某种细菌的结构示意简图，B表示不同细菌和真菌在培养基上生长的情况，请据图回答问题：

（1）图A中，①是____ ，能控制物质进出细胞；②是____ ，③是____ 。
（2）绝大多数细菌只能利用现成的有机物生活，原因是细菌细胞内没有____ 。
（3）在图B的培养基上，我们肉眼可见的不是一个一个的细菌或真菌，而是____ 。

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

    In a small village，there lived a poor man．He was smart but1,and he never worked. The villagers were so2that they often gave him some useful things. So the man could3with those things.

    One day morning，the man begged(乞讨) from door4door again．He wanted some food．5，he got a large bag of flour(面粉)from an old woman．After he went home，he put the flour into a large pot(罐子)and6it near his bed．Then he went to7．In his dream，he sold the flour at a very good8．With the money，he bought a cow ,and its milk9him more money．He was so happy in his dream that he danced in his sleep．His10hit(碰撞)the pot of flour, and the flour spilt (洒出)all over the floor．The man woke and he felt so sad．

    This thing taught him a lesson：no one can live a good life without working．From then on he worked every day and had a better life．

如图，甲乙两地的相对高度是（　　）

为防止面粉加工厂爆炸，应张贴的标志是（　　）