从经过饥饿处理的植物的同一叶片上陆续取下面积相同的叶圆片(见下图)，称其重量。在不考虑叶片内有机物向其他部位转移的情况下进行分析，其中错误的是(     )

    In our school, we have four classes in the morning. From nine forty to ten o'clock, we can have a twenty-minute rest time. It is a quarter to ten now. Look! Most of us are going out of the classroom. Some boys are playing basketball, soccer or running on the playground. Some girls are watching them or playing badminton. There are also some students in the classroom. They are talking. A few of them are reading or doing homework. Look! A girl is looking at the birds in a tree from the window. She is smiling.

    What are our teachers doing? They are either working or talking to the students in the office. They are all very busy but happy!

作文：

       岁月匆匆，花开花落，回首往事，六年的小学生活历历在目。忘不了敬爱的老师，忘不了您谆谆的教诲，慈祥的目光；忘不了亲爱的同学，忘不了朝夕相处的时光，忘不了我们结下的深情厚谊；忘不了……许多的忘不了萦绕在心头，请以“忘不了                   ”为题，写出你心灵深处珍藏已久的那段记忆。

       要求：450字左右，语句通顺，有真情实感。

读地表受热过程示意图，完成下题．