请根据以上信息回答：

完形填空

通读下面的短文，从A、B、C三个选项中，选出一个最佳选项填空,使短文意思通顺、结构完整。

      Are there aliens? In the movie Home there1. The Boov are aliens. But their enemies ruined their planet. 2the Boov have to find a new planet. They choose to go to 3and drive people away.

      Earth is a good place. The Boov are4there. They have a party to celebrate. But a Boov named Oh makes a big 5. He asks everyone to come to their party, including their enemies. Other Boov think Oh is 6 spy(间谍). Oh 7run away. He meets Tip, the last8on Earth. Tip is smart. The Boov can't catch her.

      Both Oh and Tip are on the run. They become friends and go on adventures. On the way, the9 change each other's world. And they get to understand the true meaning of “10”.

图甲、乙、丙三种固体物质的溶解度曲线，请回答下列问题．

（1）t₁℃时，甲、乙、丙的溶解度由大到小的顺序是____ ．

（2）P点的含义____ ．

（3）t₃℃时，在150g水中加入100g甲，所得溶液____ （选填“是”或“不是”）饱和溶液，形成溶液的质量为____ g．

（4）t₂℃时，甲、乙、丙三种物质的饱和溶液升温至t₃℃后，三种溶液的溶质质量分数由大到小的顺序是____ ．