题目

如图甲是被文化部授予“中国民间绝艺王”称号的安徽南卫东制作的胡萝卜排箫，它根据胡萝卜的粗细，孔的大小、高低，然后利用口腔吹气产生的震动来演奏曲目，为了探究发生体音调的高低与哪些因素有关，物理课代表在家找一个胡萝卜，用电钻在胡萝卜的一端转一个浅孔，用嘴对着胡萝卜下口部吹气，使其发出声音，用电钻继续钻深一些（未钻透），用嘴对着胡萝卜下口部吹气，比较发现发出声音比第一次低沉一些。（1）胡萝卜发声是利用____阅读短文，回答问题。Look! That is Nancy. She is my cousin. She is short but strong. We are in the same class. I like English, but she likes maths. My favourite food is noodles, but she doesn’t like them. I can dance well but she can sing well. She likes playing football. On the weekend, I often sleep in the morning, but she plays sports in the park. We have many differences, but we are good friends.【1】Who is Nancy? ( )A.She is short but strong.B.She plays sports in the park.C.She is my cousin.【2】What's Nancy like? ( )A.She sing well.B.She is short but strong.C.She is my friend.【3】Is her favourite food noodles? ( )A.No, she doesn't like them.B.Yes, she does.C.No, he doesn't.【4】What does she do on the weekend? ( )A.Plays sports.B.Sleep.C.Sing.【5】What can she do? ( )A.She can sing.B.She can dance.C.She can play the pipa.