It was long supposed _____ the main difference between animals and plants was that animals could move about.

[单选题]［A］ New plants and animals then move into the area and begin to grow.［B］ Just 2 percent of the sunlight goes through the many layers of leaves and branches above, so understory plant species have developed special traits to cope with low light levels

[单选题]［A］ New plants and animals then move into the area and begin to grow.［B］ Just 2 percent of the sunlight goes through the many layers of leaves and branches above, so understory plant species have developed special traits to cope with low light levels

[单选题]［A］ New plants and animals then move into the area and begin to grow.［B］ Just 2 percent of the sunlight goes through the many layers of leaves and branches above, so understory plant species have developed special traits to cope with low light levels

[单选题]［A］ New plants and animals then move into the area and begin to grow.［B］ Just 2 percent of the sunlight goes through the many layers of leaves and branches above, so understory plant species have developed special traits to cope with low light levels

[单选题]［A］ New plants and animals then move into the area and begin to grow.［B］ Just 2 percent of the sunlight goes through the many layers of leaves and branches above, so understory plant species have developed special traits to cope with low light levels

Many animals ____ green plants for their foodA. base onB. look forC. depend onD.

Animals can move about ___ plants cannot.A. forB. whenC. becauseD. while

I’m very interested ________ plants, animals and geography.A. onB. toC. overD. i

[单选题]What is the main difference between the two parts of the city?.A． The colour of the buildings.B． The age of the buildings.C． The colour of the roofs.D． The length of the streets.

These small dog-like animals have long been accused of killing farm animals. The