difference between acquaintance and knowing

例句：

1. 1. Sheloves to eat apples for breakfast every day.
   她喜欢每天早餐吃苹果。
2. 2. The appletree is my favorite flowering plant.
   苹果树是我最喜欢的开花植物。
3. 3. Apples are a great sourceof fiber and vitamins.
   苹果是一种极好的纤维和维生素来源。