阅读下面短文,掌握其大意,然后从31~40各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
Life on Land probably began about 430 millions years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange 31 coming out of the oceans, but in fact no animals could have been 32 if plants had not been on land first. Plants had to be on land before animals arrived. They 33 the first land animals with the surrounding and food necessity, since then, the plants are the only form of life that is able to get and store 34 .
The first plants to exist out of water were probably 35 kinds of algae ( 海藻) which were 36 by other plants that grow 37 to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution (进化) took place quickly. By the end of 100 million years, plants had developed their 38 , and some had got tree-like forms since 39 was very important in gaining sunlight. About 30 million years ago, much of the world was covered with forests of huge trees. In most
ways they were like 40 modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
A.tree B.plants C.seeds D.animals
A.living B.making C.dying D.eating
A.offered B.supplied C.gave D.afforded
A.heat B.sunlight C.energy D.water
A.many B.little C.sure D.certain
A.followed B.made C.copied D.existed
A.close B.far C.strong D.tall
A.branches B.trunks C.roots D.leaves
A.weight B.height C.soil D.water
A.modern B.ancient C.big D.small