小肠上皮细胞跨膜运输葡萄糖的过程如图所示，判断下列说法正确的是（　　）

如图是小杰在进行“观察洋葱鳞片叶表皮细胞”的实验现象，请根据他的实验过程回答下列问题．

下列关于香港的叙述，正确的是（    ）

①位于珠江口西侧

②由香港岛、九龙和“新界”三部分及其周围200多个岛屿组成

③香港岛和九龙半岛之间的水域，是世界上最优良的天然海港之一

④香港是世界著名的自由贸易港和金融中心之一

阅读短文，判断正确还是错误。

A letter

Here is a letter from Jim to his friend in the USA

Dear Lily:

    I am in China now. I go to school five days a week. The school and the food are good here. I have some Chinese friends. They are all very friendly to me. On Saturdays and Sundays we stay at home. In the afternoon we play games. My Chinese friends like English very much. They ask me to teach them English and they teach me Chinese. I like staying here.

    Please write soon!