阅读理解
B
    Hi，I'm Carrie．I wanted a guinea pig(豚鼠)so much．I read every guinea pig book in the library and I wanted my parents to buy me a guinea pig．The day before my birthday last year,my dad took me to a pet store and said I could buy one．I was so happy．
    I bought a black guinea pig and took him home．He is very cute．I named him Pepper．I give him food and drinks and play with him every day．I always tell him my stories and he is always there for me．I let Pepper run around my room in his exercise ball．When it is sunny outside．I take him out and let him run in the grass(草地)．Pepper lovesit!
    Pepper is good at running．When I put him down，he runs to his cage(笼子)quickly．One day, my brothers and I wanted to see how fast Pepper could run into his cage．We put him 1m in front of the cage．It only took him 2.5 seconds(秒)to run into it! We all got a surprise.
根据材料内容选择最佳答案