根据句意及汉语提示完成下列句子。

1.There is a glass of _____  ______ (桔汁) on the table.  

2. I like eating_____(米饭) and drinking _____ ____ (绿茶)．  

3. He'd like a large bowl of____ (水饺)．  

4.Tom doesn't like_____ (洋葱)and_____ (鱼)．  

5. Lucy likes____ (粥)and____ (汤) best.

可以操纵自变量变化，但对无关变量不能控制的实验是( )

A．准实验

B．真实验

C．前实验

D．假实验