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

相关考题

33（）A．necessaryB．wonderfulC．importantD．harmful

单项选择题33（）

A．necessary
B．wonderful
C．important
D．harmful

How does everything living on earth live（）A．Each plant ...

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.

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

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