Bruno was a boy of eight. His father worked in a cinema and his mother worked in a shop. He lived not far from his school. He always walked there and walked home. On his way to school, he had to pass a playground. It was very wet after it rained. One day,when he got home,his clothes were all wet. His mother became angry and said,” don't play in the water on your way home from school!”
    On the next day Bruno came back wet and dirty（脏的）clothes. His mother became even angrier.” I'll tell your father you come back wet again.” said his mother,” He'll punish you,you know.”
    The third day the little boy was dry when he came home.“you're a good boy today,” his mother said happily,”you didn't play in the water.”
   “No,” the boy said unhappily.” There were too many older boys in the water when I got there this afternoon. There wasn't any room（空地方） for me at all.”

请从下面两题中任选一题作文。

      一：树要成材，需要园丁的修剪；玉要成器，需要工匠的打磨；青春，同样需要雕琢，才会绽放绚丽的光彩。

      请以“青春需要雕琢”为题目，写一篇文章。

      要求：①除诗歌外，文体不限，可以记叙经历、抒发感情、发表见解等；②字迹工整，书写规范，字数600～800字：③文中请不要出现真实的姓名、校名；④文中不得引用、抄袭本试题卷阅读理解部分的材料。

      二：请阅读下面材料，按要求作文。

      商人请人们帮忙把陷在泥泞中的货车拖出来，并约定按每人出力的大小支付酬劳。两个滑头混在人群中，喊着响亮的号子，做出夸张的表情，但并不真正用力。事后，两个滑头只分到很少一点钱。他们去质问商人，商人说：“我没有注意你们的号子、表情，我只注意你们留下的脚印。”众人朝商人手指的方向望去，两个滑头的脚印都非常浅，而那些真正卖力气的人，脚印都深深地印在土地上。

      要求：①根据材料，自选角度，自拟题目，写一篇文章。②除诗歌外，文体不限，可以记叙经历、抒发感情、发表见解等；③字迹工整，书写规范，字数600～800字；④文中请不要出现真实的姓名、校名；⑤文中不得引用、抄袭本试题卷阅读理解部分的材料。

乳酸菌是一种益生菌，下列对乳酸菌说法错误的是（   ）