英语必修三unit4POST-READING

Para3. Phrases on other planets be fundamental to 1. 在其他的行星上 2. 对….至关重要 Sentences that water 1. It was not immediately obvious ______ was to be fundamental _____ to the development of life. 2. ________ many scientists believe is ______ What that the continued presence of water allowed the earth ______ ________ (dissolve) harmful gases and acids to dissolve into the oceans and seas. which 3. This produced a chain reaction, ______ made it possible for life ____ _____ (develop). to de: 1. Thus they have, _____ _____ ______轮流, in their turn become the most important animals____ ____ on the planet ______在这个星球上. 2. They are putting _____ too much _____ carbon dioxide into the atmosphere, ______ which prevents heat ________ escaping from the earth into space. from As a result 3. _____ _____of _____ ____由于this, many scientists believe the earth may become ____ too hot_____ to live on. 4. So whether ______life will continue on the earth for millions of years to come will depend on _______ whether this problem can be solved.
Para5. Phrases 1.地球上的各个地方 2. 轮流 in one’s turn all over the earth 3. 在这个星球上 on the planet 4. 太多的二氧化碳 too much carbon dioxide 5. 阻止…做… prevent … from doing 6. 取决于 depend on 7. 由于 as a result of
Para4. Phrases all sorts of fish many millions of years 1. 好几百万年 2. 各种鱼类 3. 及时 in time 4. 也；还； as well as 5. 第一次 for the first time 6. 下蛋； lay eggs 7.超过；多余 more than 8. 仍是个迷 remain a mystery 9. 在地球上 on the earth 10. 产生；分娩 give birth to
Para1. Phrases 1. 根据；按照according to 2.以…开始 begin with 3. 朝着四面八方 in all directions Sentences: 1.No one knows exactly ______ how the earth began, as it happened so long ago. 2.However, _________ 根据 a widely _______ according_____ to accepted began with (accept) theory, the universe _____ _____ (以 …开 始)a "Big Bang" ____ threw matter that _____ _____ all directions ______in 四面八方 .
Para2. Phrases in time 1. 一团尘埃 2. 迟早 , 终于 3. 冷却 a cloud of dust cool down Sentences； 1.For several billion years after the "Big Bang, the earth was still just ____ ____ of _____ a cloud dust____一团尘埃. What it was to become was uncertain until 2._______ when the between 4.5 and 3.8 billion years ago ______ dust settled into a solid globe. so violent ______ 3.The earth became _____ that it was not clear whether ______ the shape would last or not. in time 4.They were _____ ______ 最终to produce carbon, nitrogen, water vapor and other gases, _______were to make the earth's atmosphere. which 5. ________ What is even more important is ______ that as the earth ____ _____ 冷却, water began to appear on cooled down its surface.
Para4. Sentences: 1. They multiplied and filled the oceans and seas with ____ oxygen , _______ which encouraged the later all sorts of development of early shellfish and____ ____ ____ fish ____ 各种鱼类. called (call) amphibians, were able to 2. Others, _______ live on land _____ ____ as well as ____ 也in the water. 3. Later when the plants grew into forests, reptiles appeared____ ____ ___ ____第一次. for the first time laying eggs 4. They produced young entirely by____ ___ 下蛋. 5. ______ a Why they suddenly disappeared still ______ remains mystery. 6. These animals were different from all life forms in the past, because they _______ ______ gave birth to ______ 分娩young baby animals and produced milk to