两个杂合体杂交，子代只有一种表现型，则这两种杂合体的基因型可能是（）

阅读理解

    My name is Eve Smith. This is a photo of my family. There are five people in the photo. Look! The old woman is my grandma. She is seventy years old. The woman in red is my mother. She is a doctor in a hospita l. The man in a black coat is my father. He is a teacher in a middle school. This tall man is my uncle. He is my mother's brother. He is next to my mother. I'm in yellow.

   We live in this house. Look here, please! In front of our house, there is a small garden. It’s very nice. There are many beautiful flowers and some small trees in the gard e n.

下列说法错误的是（　　）

生态城市建设让人与自然更趋和谐。目前苏州正在创建国家生态城市，为了进一步加强城市生态环境建设，以下措施不合理的是