阅读短文，判断正 (T) 误 (F)。

      My name is Helen. I'm thirteen. I'm in No. 5 Middle School. I'm in Class 4, Grade 1. HanMei

and LiuYing are my good friends. They are in Row (排) 3, but I'm in Row 6. Today HanMei isn't

here. I think she is at home.        

      Mrs White is our teacher. Her name is Jean White. She is an English teacher. She is very nice.

She looks very young, but I don't know how old she is.

( )1. Helen is twelve.

(     )2. HanMei is in Class 3, Grade 1.

(     )3. Today I'm at home.

(     )4. Mrs White.is our English teacher.

(     )5. Mrs White is an American (美国的) woman.

下图为中国水稻分布图。读图回答问题。（11分）

（1）水稻集中产区主要分布在 。南方地区，水稻集中产区与水稻分散产区地区分布差异的主导因素是 ，单季稻产区与双季稻 产区地区分布差异的主导因素是 。

（2）我国西北地区宁夏平原若大规模种植水稻，将产生哪些不利影响？ 

（3）武汉在历史上是我国大米集散地之一。如果在武汉建立国家大米交易中心，请分析武汉建立大米交易中心的有利区位条件。

（4）为了实现农业可持续发展，有人建议我国水稻集中产区实行休耕制度。你认为是否可行？理由是 。