人类可直接利用的水资源是占全球总水储量中2.53﹪的淡水中的0.34﹪的什么水？

任务型阅读（共6小题；每小题1分，满分6分）
Some birthday customs are quite similar in many parts of the world---- birthday candles(蜡烛), birthday games，and birthday cakes. But some customs are more specific to certain countries. Here are some children talking about their customs.
Linda---I am fourteen. I come from Aruba. In our country,Children take something special to school for their classmates and all teachers. Each teacher gives the birthday child a small gift like a pencil, an eraser or a postcard. The birthday child is also allowed to wear special clothes instead of the school uniform.
Lucy---I am one year older than Linda. Denmark is my country. A flag is flown outside a window to show that someone who lives in that house is having a birthday. Presents are placed around the child's bed while they are sleeping so they will see them at once when they wake up.
Tom---I am as old as Linda. I am from Brazil. The birthday child receives a pull on the earlobe(耳垂) for each year in my country. The birthday person also gives the first slice of cake to his/her most special friend or relative, usually mom or dad.
根据短文，完成下面表格，每空不超过4个单词，并将其答案写在答题卡中相应题号的横线上。

Names	Countries	Ages	Special customs
Linda	Aruba	Fourteen	Each teacher receives something special from 小题1:._________ and gives him or her a small gift.
Lucy	Denmark	小题2:________	If you see 小题3:________ flying outside a window, you may know someone in that house is having a birthday
Tom	小题4:______	Fourteen	小题5:_________ of the birthday cake is usually given to Mom or Dad.