在设计对照组实验时要充分考虑变量因素,下列各项,能形成对照关系的一组是( )
A:低温和干燥
B:低温和潮湿
C:低温和室温
D:高温和干燥
A. sofa B. chair C. table D. phone E. fridge
This is my living room. My ____is near the window. The ____is near the door. The____is under the picture. The ____is on the table. Where is the cat? It's on the____
看图,照例子,填上合适的单词。
Model: a rabbit rabbits
下列各项中划线的词语,使用恰当的一项是( )