下列词语中，加线字的注音全都正确的一组是(　　)

308＋286=____

海南岛是我国最大的经济特区。在下图，甲是海南岛气候分区示意图，乙图为地形分区示意图。读图，完成下列问题。

阅读短文，判断下列句子分别符合A、B、C哪一项。

    Hello! My name is Jack. I'm eleven. I'm a student. I study in the Fifteenth Primary School. I'm in Class 4, Grade 5. There are 45 students in my class. They are 22 girls and23 boys. We have English, Chinese, maths and other subjects.

    This morning I was the first one to get to school.John was the second one. Ann and Amy were the third and the fourth. We are in the same class. We have English lessons in the sixth classroom. Our classroom is on the fourth floor of our school building.