解释下面话的意义，并用算式表示数量之间的关系．

例:六年级(1)班，男生人数是女生人数的 $\frac{8}{9}$ ．

这句话告诉我们：女生人数是单位“1”的量，把女生人数平均分成9份，男生人数有这样的8份．

算式： $女生人数\times \frac{8}{9}=男生人数$  

甲车间的人数是乙车间人数的85％．

The story of the red-crowned crane

    Have you ever heard of the song "The story of the red-crowned crane"? It is about a girl called Xu Xiujuan.

    Xu xiujuan was born in Zhalong, Heilongjiang Province in 1964.Her father's job was to look after red-crowned cranes. Xiujuan started helping her father when she was young. She soon showed a great love for these white birds. She become good at raising them.

    When Xu Xiujuan was 21, she got a job at a nature reserve in Jiangsu Province . She enjoyed taking care of the baby cranes. If a bird become sick, she took good care of it stayed with it every day until it was strong enough to fly again.

    In September 1986, one of the birds went missing .The workers in the nature reserve looked everywhere, but no one could find it. Xiujuan was very worried. She looked for it day and night for two days. On the second night, while she was looking for the missing bird, she fell into a river and died. She was only 23.

    Later, a song was written in memory of Xiujuan. Though Xiujuan died young, people always remember her when they hear the song or see a red-crowned crane.

根据短文理解, 从A、B、C、D四个选项中选择最佳答案填空。

    Lucy and Lily 1 twins. They are twelve. They 2 a big and nice bedroom. There 3 two beds and two desks in the room. Lucy and Lily like milk and bread, but they 4 tea or meat. You can see some bottles of milk and some bread on 5 desks. But you can't see 6 tea or meat in the room. Lucy and Lily can play 7 football and fly kites. But they can't mend a bike 8 a radio. They are good 9. They 10 very much.