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111沧州市颐和中学导学案20132014第二学期第_40_号Class _ Name_ Date_学科高中英语年级高一作者杨卫芬 孙悦 课题课型新课1. Read the passage quickly and answer the questions.（1）. When did the “Big Bang” happen?（2）. What form was the earth after the “Big Bang”?（3）. What made up the earths atmosphere after the earth exploded?（4）. How did water come into being on the earth?（5）. Whats the significance of the presence of water on the earth?（6）. What was important to the development of fish?（7）. What made possible the rise of mammals on the earth?（8）. Why are mammals different from all life forms in the past? 3. True (T) or False (F).1). The earth appeared before the Big Bang happened. 2). The original atmosphere consisted of nitrogen and oxygen. 3). The main difference between the earth and other planets is that there is water on the earth. 4). Life began in water and then on land. 5). Mammals appeared before the development of dinosaurs. 6). Dinosaurs could give birth to young baby animals and produced milk to feed them. 7). Human beings produce too much carbon dioxide which causes the global warming on the earth. 8). According to the text, human beings would disappear in the end. 4. Fill in the blanks in the following form.TimeWhat happenedBig Bang_ began to form and combine to create stars and other bodies.Between 4.5 and 3.8 billion years ago Dust settled into a _ globe. The earth exploded to produce its _. The continued _ of water allowed the earth to dissolve harmful gases and _ into the oceans and seas.Many millions of years later The first small plants on the surface of the water produced _. Early _ and all sorts of fish appeared. _ began to grow on land. Insects and other _ appeared.Many millions of years later _ appeared and they laid eggs. Dinosaurs developed, laid eggs and _ for more than 140 million years. Mammals rose and _ babies.About 2.6 million years ago Some small _ animals with hands and feet appeared and spread all over the earth.NowHumans produce too much carbon _, making the earth too hot.5. Summary - How life began on the earth.“Big Bang”Stars atoms other bodies Earth: a cloud of _a solid _carbon nitrogen water vapour other _ the earths _Water: _ to the development of lifeextremely small _ on the surface of the waterearly _ and all sorts of fishgreen plants on land amphibians land animals insects_ huge animals (dinosaurs) disappearedthe rise of _human beings111
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