A:need repairing
B:needs to repair
C:needs repairing
D:need to repair
①细胞壁 ②细胞膜 ③叶绿体 ④核糖体 ⑤液泡
⑥内质网 ⑦中心体 ⑧高尔基体 ⑨线粒体 ⑩溶酶体.
当U<U0时,则P____ P0;灯很____;当U=U0时,则P____P0;灯____.
假如你是Jack,请你根据表格信息,介绍一下你们一家三口的一日三餐。要求语句通顺,要点全面,书写规范,词数50—60词左右。
breakfast
lunch
dinner
father
eggs and apples
chicken, salad and rice
mother
eggs and milk
tomatoes, rice and salad
rice and vegetables
Jack
bread, milk and fruit