P_____ studies mechanics,heat,light,sound and electricity.
which give off light and heat
The sun p___ light and heat
The sun sends ( ) light and heat.
The sun ___ light and heat ___
watch the light and sound show
human beings get heat and light from the sun
It is from the sun ______we get light and heat
The sun provides us ( )light and heat添介词~
The sun _____ (give) off heat and light.
The sun____(give) us light and heat.理由
fire give us heat and light的中文
Electricity can light our homes and warm us(对划线部分提问) (light