Ann is my classmate. She comes from New York, and she lives in Shanghai with her parents now. Every morning, she goes to KFC to have breakfast. Sometimes she buys a hamburger for me. She can't speak Chinese well. In the evening, her father often helps her with it. He's a teacher in our school. He can speak Chinese very well.

    Ann thinks the school life(生活)in China is very interesting. Ann likes reading Chinese books because she wants to know more about China. She tries(努力)to talk with her Chinese friends in Chinese. She hopes to speak Chinese well. She is very happy to live in China. She loves people here.

下列说法正确的—项是（    ）

以下哪项表述是对“朝贡贸易”的准确理解？(　　)

有关长江三角洲地区位置的说法，不正确的是（　　）

解方程（5x﹣1）²=（2x+3）²的最适当方法应是（   ）