综合填空。
根据短文内容及首字母提示，在空白处填入适当的单词。
There are many different festivals in the world. People can do many kinds of things. Spring Festival is the
most i 1 festival in China. Chinese people often perform lion and dragon d 2 . They also eat dumplings on
that day. The second Sunday in May is Mother's Day. We often s 3 our love to our mothers by giving
flowers. April Fool's Day is a funny festival. You can p 4 tricks on your friends and they can not be angry
with you. Many people celebrate Christmas. They often eat t 5 and give gifts to each other.
流经肾小管时，被全部吸收的物质是[ ]