1. (2020八上·中山期中) 根据短文内容，回答问题

As we all know, it's important to have good friends and get on well with our friends.

Why are friends so important to us? There are many reasons, but I think the most important one is that friends can make our world more and more colorful. When we are happy, they will share our happiness; when we are down, they always cheer us up, when we are in trouble, they are always ready to help us out.

I have a friend like this. Her name is Fiona. She is a warm-hearted girl and more outgoing than me. She can get on well with almost everyone. She shares everything with me. We spend much time together, just like sisters. As for hobbies, we both like studying computer science, Last week, she won a prize in a computer competition. I was really happy for her and really proud of her. I congratulated（祝贺）her again and again and gave her a big hug in tears. In study, we usually help each other and learn from each other. I am weak in math. She often explains the math exercises to me over and over again patiently（耐心地）.Thanks to her help, I made progress in last math exam.

Friends are like lamps and they can light up our life. My friends are very important to me and I can't leave them.

1. （1） Why are friends important to the writer?
3. （2） When we are in trouble, what will our friends do?
5. （3） Whatis Fiona's hobby?
7. （4） How did the writer feel when Fiona got the prize?
9. （5） Which subject is the writer weak in?