浙江省杭州市塘栖中学高中英语必修三：Unit2reading1教学课件.ppt

;____ major planets in the solar system:;;How did the earth come into being?;Moon;Violent earth; Answer the following question: How did water come into being on the earth?;In what forms did life begin on the earth?;Fill in the blanks with different kinds of living things.;What damage are we human beings doing to the earth?;The development of life on the earth:;Further discussion: (choose one of the topics):;Homework (choose one of them):;;; After the “big bang”, the earth was just a cloud of _______ dust, it _______loudly with fire and rock, which were _____ to produce the_________, carbon dioxide and other gases. Then ________ grew. They multiplied and filled the oceans and seas with _____. Many millions of years later the first ________ began to appear on land. When the plants grew to forest, _____ appeared for the first time. They produced young generally by __________. When dinosaurs disappeared, ________ became more important.; Now small clever animals with ______ appeared and ____ all over the world. As time went by they covered the earth and they are putting too much ____________ into the atmosphere, which ______ heat _______ the earth into space. Whether life will continue on earth for millions of years to come will _______ whether this problem can be solved.