小小翻译家。请根据汉语提示补全句子。

1. I go to the movie theatre to ____________ (观看) a movie.

2. Do you go to the ____________ (动物园) to watch the animals?

3. My hair is black, and my sister's hair is black too. We are the ____________ (相同的).

4. I like to ____________ ____________ (打乒乓球) with my brother.

5. They ____________ ____________ ____________ ____________ (散步) in the morning.

下列说法正确的是

A．强电解质一定是离子化合物

B．强电解质、弱电解质的电离都是吸热过程

C．强电解质的饱和溶液一定是浓溶液

D．强电解质在水中一定能全部溶解