单项选择题

How is food for plants made Food for plants is made （）

A．from water
B．from the air in the sky
C．from the soil
D．from water, things in the soil and air and sunlight

<上一题目录下一题>

热门试题

单项选择题

How does everything living on earth live（）

A．Each plant can live alone.
B．Each animal can live alone.
C．Everything living on earth cannot live without needing other living things.
D．If living things want to live they must kill each other.

单项选择题

Why is all life in danger Because （）break up the food chains.

A．Human beings
B．animals
C．plants and animals
D．man and wild animals