某些饮料中常溶解一定量的二氧化碳，溶解在水中的一部分二氧化碳与水反应生成碳酸，所以这种饮料也称为碳酸饮料．

    When you talk to people in the training camp, you'll probably find that a lot of them are feeling just like you are. They're all new to the school and don't know what to ____ Talking about a common interest with your classmates can help you develop____

    The work in high school sometimes worries freshmen a lot. The work in high school gives you more knowledge of many subjects. So you may find it's a bit more challenging. If you ever find your work too difficult, teachers can ____ you.

    High school also has more after-school activities, such as music and theatre groups, sports teams and____. This is a good chance to learn how to be more independent. It is also a good time to develop your interests and try new things.

    Mike is a middle school student. He goes to school from Monday to Friday. His home is about 5 miles from school. He usually walks to school. It takes him 30 minutes to walk there. Nancy's home is a little farther. It's 20 miles from school. So she often takes the school bus. It takes her 15 minutes to get to school. Bob lives outside the city. It's a town 30 miles away from his school. He takes the subway. It takes him 8 minutes to get to school by subway. He can have breakfast at home and then leave for the subway station. He studies very hard.