Passage OneWhen my daughter first began competing in school ches

Passage One
When my daughter first began competing in school chess tournaments, I often chatted with other parents. Sometimes, I'd ask if they played chess themselves. Usually, the reply was no. When I volunteered that I was learning to play, their tone was cheerfully joking: "Good luck with that!" If this game is so good for kids, why are adults ignoring it? Seeing someone playing smart phone games, I wanted to say: "Why are you having your kids do chess while you do that?"
Sure, we parents had work to do, work that helped pay for the lessons our kids were enjoying. But I also wondered if we were sending a subtle message: that learning was for the young. During one tournament, I saw a group of parents. They were playing chess! Just then, a group of kids passed me "Why are adults learning chess?" one asked, in a vaguely teasing tone.
I was tired of sitting on the sidelines. I wanted in. And that is how I got a membership card and started throwing myself in. Early on, I was nervous, even though I really had nothing to lose, except my pride. "A master can sometimes play badly," as one grandmaster (国际象棋大师) put it, " a fan,never!" And fan I was. It was three hours of concentration and thinking, with my phone turned off. It felt like a gym for the brain.
Being a beginner can be hard at any age, but it gets harder as you get older. The phrase "adult beginner" has an air of gentle pity. It implies the learning of something that you should have perhaps already learned.

39.What did the writer think of his experience of learning to play chess?
A、It helped him remain calm
B、It helped him train his brain
C、It made him proud of himself.
D、It made him question himself.
【正确答案】：B
【题目解析】：文章第三段最后两句提到，下棋需要专注和思考，作者关掉了自己的手机，下棋就像是大脑的健身房由此可知，作者认为学习下棋有助于训练他的大脑。故选B。