plants to 选择

Light gets through, and this is essen- tial________plants to make the food

[A] with

[B] from

[C] under

[D] for

These plants are watered ________．A. each other dayB. every other dayC. each of

[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

[试题]Someplantsaresosensitive_____pollutionthattheycanonlysurviveinaperfectlycleanenvironment.(A)from(B)against(C)to(D)with

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

[单选题]A．Why do plants grow in some places and not in others? Why does some land have so much growing on it，while other land has almost no plants growing on it at all?To grow plants need several things． One is warmth． In very cold places almost nothing grow

[单选题]29． Why are green plants and grass helpful?A． Because they can hold the water．B． Because they can stop the wind from blowing the earth away．C． Because they can keep the earth wet．D．All the above．