单项选择题
A.Human beings B.animals C.plants and animals D.man and wild animals
33()A.necessaryB.wonderfulC.importantD.harmful
单项选择题33()
A.necessary B.wonderful C.important D.harmful
Which living things can use sun energy directly()A.Anim...
单项选择题Which living things can use sun energy directly()
A.Animals. B.Plants. C.Both animals and plants. D.All living things.
40()A.ableB.unableC.goingD.about
单项选择题40()
A.able B.unable C.going D.about