地球仪是地球的模型，是同学们学习地理的工具．将图示地球仪按地球自转方向转动，最早从我们视线中消失的是（　　）

玻璃工艺品如今做的越来越精美，在玻璃雕刻过程中用到的是氢氟酸，发生的反应为4HF＋SiO₂＝SiF₄↑＋nH₂O，则下列说法正确的是（　）

    My name is Cindy. I am a girl. I am ten years old. I am a pupil. I'm tall and fat. I have two good friends. Celia is tall and thin. She's shy. But sometimes she's very funny. Tina has short hair.

    She is helpful. Miss Liu is our Chinese teacher. She is clever and beautiful. She teaches well. We all like her Chinese class.

— Yes, B-A-L-L.