Thousands of years ago, in the middle of an ocean, miles from the nearest island, an u
ndersea volcano(火山) broke out. The hot liquid rock piled higher and higher and spread wider and wider. In this way, an island rose up in the sea. As time went on, hot sun and cool rains made the rock split and break to pieces. Sea waves dashed against the rock. In this way, soil and sand came into being. Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider spun its web in vain, because there were no insects for its web to catch. Insects couldn’t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.
1.The main point of the passage is ().
A.how an island formed
B.how a volcano broke out
C.how plants were brought to the island
D.how plants and animals began to live on an island in the sea
2.According to the passage,() made the island rise up in the sea.
A.hot liquid rock from the undersea volcano
B.sand brought by the wind
C.rock from the nearest island
D.sea waves
3.The word "dash"(in Para.2)means ().
A.smash
B.destroy
C.perform
D.rush
4.Why couldn't animals live on the island before plants?()
A.Because it was too hot on the bare island
B.Because it rained too mush
C.Because there was no water
D.Because they couldn't find food
5.Which order of coming into being on the volcano-produced island is right?()
A.Hot liquid rock, animals and plants
B.Soil, hot liquid rock and plants
C.Spiders, birds and plants
D.Soil, plants and animals