Read and choose.(给下面的图片选择合适的描述。)   

1. He is at school now. He will be home at four o'clock.    

2. Father is at the office now. He will be home at six o'clock.    

3. Maomao is on the train. She will be home at nine o'clock.

4. Lily is in the park now. She will be home at seven o'clock.

良性肿瘤特点的叙述不正确的是( )

A．多见于老年

B．一般无症状

C．多呈膨胀性生长，不发生转移

D．有包膜，界限清，少数可恶变

E．细胞分化良好，细胞形态和结构与正常组织相似