My name is Tom. I am ten years old. I want a new friend. I can swim. I can cook delicious food and play basketball. I often play basketball on the weekend. But I can't play the piano. I can't do any kung fu. Do you want to be my friend?
树木年轮是气候变化的历史证据。读某地树木年轮示意图,回答问题。图中反映了该地近百年气候变化,说法正确的是( )