如图表示的是初中几种常见物质的转化关系（部分反应物、生成物及反应条件省略），已知C为生活中不可缺少的调味品，F为大理石的主要成分，请回答以下问题：

    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.

①国际金融体系和贸易体系的形成 ②国家垄断资本主义的空前发展

③形成以美苏冷战为特征的两极格局 ④科学技术推动生产力发展更为迅速

平面上不重合的四条直线，可能产生交点的个数为____个．

__________ the ice cream. It's cold and sweet.