2015年6月国家开始实行饮用水新标准,矿物质水、碱性水、离子水等名称将被禁止使用.某品牌饮用水标签标明了该水中钠、钾、钙等的含量,钠、钾、钙等是指（）
| A． | 原子 | B． | 分子 | C． | 元素 | D． | 单质 |
When is your birthday，Li Fang？
It's ______ July 26．（ ）
A．onB．toC．in
Who is the girl under the tree？
She is ______ classmate，Annie．（ ）
A．IB．meC．my
This book ______ by children．（ ）
A．lovesB．lovedC．is loved
I ______ to school on foot every day．（ ）
A．goB．wentC．has gone
What did Mary say to you just now， Alan？
She asked______．（ ）
| A． |
if I could go to the museum with her tomorrow |
| B． |
why I am so sad today |
| C． |
who did I play volleyball with after school |
| D． |
what will I do on the weekend |