如图表示“制作洋葱鳞片叶表皮细胞临时装片”实验的部分操作步骤，其正确的操作顺序是（    ）

请据图回答：

阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项。

Hi! I'm Alan. This is my dream house（梦幻屋）. It has a small but nice room. Some pictures are on the wall. There is（有） a bookcase in my room. There is a desk and a chair in it. My schoolbag is on the desk. There are two baseballs near it. Oh! Where is my pencil case? It is under the chair. There are some pencils and a ruler in the pencil case. My bags and a basketball are under the bed. I like my dream house very much.