读图，我国地形的主要特征是（    ）

2016年3月5日至15日，第十二届全国人民代表大会第四次会议在北京举行。梅梅所在班级决定开展“聚焦两会”主题学习，搜集到以下资料，请一起完成探究。

I often w____the dishes(餐具)after the dinner.

Fanny and Benny live in the ____ estate. They go to school ____ every morning. They are good friends. But they have ____ hobbies. Fanny usually reads books at home in his spare time, and Benny likes bicycling.

细胞中的物质根据分子大小可以分为____ 、____ 两大类．