如图所示，程序框图的输出结果是（   ）

我国在各少数民族聚居的地方实行区域自治，设立自治机关，行使自治权利的制度，它体现了国家充分尊重和保障各劣数民族管理本民族事务的权利。这项制度是（    ）

给玻片标本染色时，最合理的操作是（  ）

   A plant makes its own food in its leaves . Water comes to the leaves through the roots . Air gets into the leaves through very small holes . The green coloring in the leaves uses the water and air to make the food for the plant . It also needs sunshine because a plant can make food only when the sun is shining.
   Animals and people could not live without green plants . They both eat plants . People and some animals also eat the meat of some animals and these animals eat plant