先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

    The former(前任的)US president Barack Obama's wife，Michelle,made lots of changes after she became First Lady in 2009．One of1was the White House garden.She2it by herself.The garden has many kinds of fruit and3.  The fresh fruit and vegetables are used in the White House garden.The garden is also a 4for US children because they would like treat healthy food and live a healthy life by knowing about the garden．

    "My husband will tell you that one of the most common questions she gets5 other people is．How is your wife's garden?"Michelle said．"And over the years this little garden has influenced (影响)lots of people across this country to start their 6．"

    The former First Lady was worried that the new president wouldn't7the garden any more．

    But she doesn't have to 8 ．The National Park Foundation(基金会)has raised$2.5 million．It will 9the garden growing for at least 17 years．

    "This garden has taught us that10we have the courage(勇气)to plant something，"Michelle said．"we can water it and invite friends to help us take care of it．We never know what might grow．"

历史兴趣小组研究二战后的国际关系，兴趣小组分工查找相关史料，与下列分组内容相关的主题最有可能是（    ）

第一组：柏林墙的修建与拆除

第二组：古巴导弹危机中的美苏两国

第三组：朝鲜战争与越南战争始末

    Last Friday when Jose Rodriguez , a 5-year-old white boy, asked his mother Lydia Rodriguez if he could get his blonde hair cut like his black friend Reddy's, and of course his mother agreed. For a very1reason the two pre-school friends decided to2 their teacher with matching haircuts.

    Jose3that if he and Reddy had the same haircut, no one would be able to4 them. Reddy apparently thought this trick was5as well.

    “It is just two6 boys. Obviously, they see they are different colors, they just don't care. It is not7, Rodriguez said. She sees Jose's inability to see a8 between himself and his friend as a parenting win. “I just taught him to9everyone the same,” she said.

    The teacher played along and10she was talking to Jose when Reddy arrived before Jose, he told the teacher and his11he was Jose.

    On Monday, Rodriguez 12the story on the Facebook.78,000 people 13 it and the story has gone viral（疯传）. On the post she wrote: “If this isn't proof that14and prejudice is something that is15 , I don't know what is. Their16 is the only difference Jose sees in the two of them. Though Jose loves17himself on TV and the Internet, he remains unsure why his haircut became such a big18 .

    “He still has no idea why people19so much”, Rodriguez said. “He wanted to20Reddy and now he thinks they look the same.”