山东省临朐县实验中学高一英语 Book3 Unit4 Astronomy学案3 人教新目标.doc

unit4 astronomy：the science of the stars no_3_教师寄语：never put off what you can do today until tomorrow.今日事今日毕！how life began on the earthfast readingwhat is the passage about?put the order of development of life into a time line.a. insects and amphibians appeared.b. the earth became a solid ball.c. reptiles appeared.d. the earth was a cloud of dust.e. shellfish and other fish appearedf. dinosaurs appeared. g. small plants grew on the water.h. plants began to grow on dry land.i. water appeared on the earth.j. mammals (including humans )appeared.the right order:multiple-choice1.why was the earth different from other planets?a it produced a lot of heat. b.the water remained.c water disappeared. d.it was the oldest planet.2.why was life able to develop on the earth but not on other planets?a the earth had a solid shape. b. the earth did not have harmful gases in its atmosphere.c the water stayed on the earth but not on other planets. d. the earth was not too hot and not too cold.3.why did the plants grow before animals came?a animals needed plants to protect them from the sun. b plants provided oxygen for animals to breathe.c animals could hide from hunters in forest.d it was easier for plants to grow.4.what problem is caused by human beings?a they exist everywhere on the earth.b they cause global warming.c they find new methods of growing crops.d they enjoy hunting and fishing.close readingread the text and match the main idea of each paragraph.paragraph 1: a. the importance of water for life paragraph 2: b. the development of plants and animals on the earth paragraph 3: c. the formation of the earth paragraph 4: d. a widely accepted theory about the formation of the universe paragraph 5: e. the arrival of humans and their impact on the earth .answer the questions1. what was there on the earth before life could begin? 2. why do scientists think there has never been life on the moon? 3. why did animals first appear in the seas? 4. why did green plants help life to develop? 5. why were mammals different from other animals?6. how did water come into being on the earth? translate phrases:1.一个广为接受的理论_2.向四面八方_3.及时，最后_4.对.是基本的_5.水的长期存在_6.连锁反应_7.各种各样的鱼_8.第一次_9.产卵_10.产生，分娩_11.轮到某人，接着_12.阻止，制止_13.由于_14未来数百年_15取决于_.important sentences1. what it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. _2. the earth became so violent that it was not clear whether the shape would last or not._3.it exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth s atmosphere._4. what many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. _5. they multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish._ _.fill in the blankas the result of big bang, the violent earth slowly settled into a globe 1 (move) around the sun. the gasses which were to make the earths 2 （大气层）came into being from the explosion of the dust ball, with water 3 (follow) them while the earth cooled down. it allowed the beginning for life. many millions of years 4 , the first 5 (极度的) small plants began to appear 6 the surface of the water, 7 (繁殖) and filling the sea and oceans, which encouraged the later development of early shellfish and all sorts of fish. as time passed, green plants taking carbon dioxide and producing 8 （氧气）came to land and grew into forest. later the chains of lives continued, such as insects, amphibians, reptiles, dinosaurs and mammals, the typical of 9 is human being. they dont only do 10 to the earth but cause damage to it.a visit to the moon.fast reading1. the passage mainly talks about _.a. what the moon is b. my visit to the moon c. the differences between the earth and the moon d. liyanping, my friend, who is an astronaut2. when we were going up, we felt _.a. we were pressed against our seatsb. we were lighter than we are on the earth c. as if we were flyingd. the rocket was shaking stron