清末民初，中国社会生活面貌有了很大变化，对下列表格中变化理解正确的是（   ）

项目	以前	现在（清末民初）
日常生活	无照相、电影	照相、电影的传入和流行
发式	清军入关后男子留有长辫子	剪辫子
人际称谓	老爷、夫人	先生、君
服饰	长袍、马褂、旗装	西服、中山装、旗袍

水稻是我国主要的粮食作物之一，科研人员将玉米的PEPC酶基因与PPDK酶基因导入水稻后，培养成双转基因水稻并进行了以下实验探究；将双转基因水稻叶片放在温度恒定且适宜的密闭容器内，测量该容器内氧气量的变化情况，结果如图—所示；在强光下测得温度对其净光合速率的影响，结果如图二所示 。

雅典卫城中最负盛名的建筑，供奉雅典城邦的守护神雅典娜的建筑是         (　　)

下列整式乘法运算中，正确的是（   ）

     All students need to have good study habits. When you have good study habits, you will learn things quickly and also remember them easily. Do you like to study in the living room? This is not a good place, because it is usually too noisy. You need to study in a quiet place, like your bedroom A quiet place will help you only to think about one thing. When you study, do not think about other things at the same time. Only think about your homework. If you do so, you will do your homework more quickly, and you will make fewer mistakes.
    Good study habits are very important. If you do not have them, try to learn them. If your studyhabitsare already good. Try to make them better.