In April, the weather in some places in Shanxi was really changeable. People still remember they have _______ four seasons in a week.
A：organized
B：experienced
C：described
D：travelled
竹节虫的身体与竹枝极为相似，这属于（ ）
修改病句
小方的写作水平有了明显的改进和提高。
下列关于动物细胞分裂的叙述，错误的是（ ）
