阅读下面短文，从每小题所给的A、B、C、D选项中选出最佳选项。
If you are really interested in music festivals, then you have probably heard of the Bestival Music Festival. It takes place every September on the Island of Wight, the UK. As it is at the end of summer, people think it's their last chance to go to a festival and have fun before going back to boring work.
The dream begins as soon as you start traveling to the island. In order to get to the campsite (营地) of the Bestival, you have to take the ferry (渡轮). The ferry is full of happy festival lovers who are ready to join in the fantastic music party. After you arrive at the campsite, you can put your tent up. There people talk with each other openly. They are not that cold like those you meet in your everyday life.
The festival lasts for four days. During that time you forget all your worries and problems, just like living in a dream. And it is really hard for you to come back to "reality" after that.
It seems that Bestival gives people a real sense of unity. I joined in the Bestival with my friends the year before last. It was so happy and we all lost ourselves in the beautiful music. We Are Family sung by Sister Sledge was my favorite. I'm really looking forward to joining in it for a second time.
2MgO+C，下列有关叙述错误的是（ ）