情景一：部分家庭贫困学生在家庭经济条件良好甚至优越的本地同学面前，感觉到了生活水平上的明显差异，往往在同学面前自惭形秽，抬不起头。
情景二：农民工子女由于语言等差异，总感觉自己比别人低劣，导致丧失自信，在各方面我挫败感很强。
情景三：部分家庭贫困学生很少主动与同学交往或一起做游戏，在集体活动时，他们常常是“旁观者”或“局外人”。

以下是对生物体ATP的有关叙述，其中正确的一项是                                  （　　）

为了探究音调与什么因素有关，小明设计了下面几个实验，如图所示，你认为不能够完成探究目的的是（   ）

下列运算中，正确的是(        )              

阅读下列短文，从下面每小题的A、B、C、D四个选项中选出最佳选项。

B

    A group of children meet in the library each week during lunchtime. They are famous as the Miss Margaret Fan Club. Every Thursday, the twelve members of the Miss Margaret Fan Club make their way to the study center in the back of the library.
    The first Thursday they met, Miss Margaret greeted them with a little talk.
    "Welcome to the first meeting of the writing club!" she said. "During the school year, we will meet here to work on story writing. At the end of the year, I will put all of your stories together in a book."
    Miss Margaret gave a pencil and two pieces of paper to each student.
    "Now, your first homework is to think of a character. Now, try to think about an interesting person. When you think of this person, write down all the details(细节)about him or her in your head. "