人教版高一英语必修三专题之 预习导航 学案：Unit4SectionⅠ.doc

预习导航一、阅读课文“how life began on the earth”并回答下列问题1what is the right order according to the text?animals appeared and spread.the formation of the earth.plants appeared.difference between the earth and other planets.abc d2why was the earth different from other planets?ait produced a lot of heat.bwater remained.cwater disappeared.dit was the oldest planet.3what is the main cause that life was able to develop on the earth but not on other planets?athe earth had a solid shape.bthe earth did not have harmful gases in its atmosphere.cwater stayed on the earth but not on other planets.dthe earth was neither too hot nor too cold.4why was it necessary for plants to grow before animals?aanimals needed plants to protect them from the sun.bplants provided oxygen for animals to breathe.canimals could hide from hunters in the forest.dit was easier for plants to grow.5it can be inferred from the text that _.aafter the “big bang”，what the dust was to become remained a mysterybplants appeared before the animalscthe plants multiplied and filled the oceans with oxygendplants played an important part in the appearance of the animals二、阅读课文“how life began on the earth”，根据文章段落内容连线 1para1 athe formation（形成）of the earth.2para2 bthe importance of water for life.3para3 ca widely accepted theory about the formation of the universe.4para4 dthe arrival of humans and their impact（冲击）on the earth.5para5 ethe de