2013届高考新课标人教版必修3复习Unit4Astronomythescienceofthestars.docVIP

2013届高考新课标人教版复习学案-人教版必修3-- Unit 4　Astronomy the science of the stars .重点单词聚焦 1．It cost him more than one________(十亿) dollars to complete the project. 答案：　billion 2．“What happened？” John’s mother asked him in a________(温和的) voice. 答案：　gentle 3．Before the Earth’s protective________(大气层) was formed，there was no life except in the sea. 答案：　atmosphere 4．With the________(引力) of the moon and the sun each day，tides (潮汐) roll in and roll away. 答案：　pull 5．Man-made________(卫星) are used for sending and receiving messages. 答案：　satellites 6．Smoking________(乘，增加) the risk of heart attacks and other health problems.[来源:学§科§网Z§X§X§K] 答案：　multiplies 7．Eating too many desserts can be________(有害的) to one’s teeth. 答案：　harmful 8．Global warming and________(气候) change problems are perhaps the greatest threats to our planet. 答案：　climate 9．According to the________(理论) of relativity (相对论)，nothing can travel faster than light. 答案：　theory 10．Most of the evidence had been destroyed.________(因此，于是)，it was almost impossible to prove him guilty. 答案：　Thus 课文原句突破 1．随后它会变成什么没有人知道，直到38～45亿年前，这团尘埃才慢慢地形成一个固体的球状物。 ________ ________ ________ ________ ________was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 答案：　What it was to become 2．地球变得如此猛烈，以至于它的形状能否持久还不清楚。 The earth became________violent________it was not clear whether the shape would last or not. 答案：　so；that 3．这就产生了一系列的反应，使得生命就有可能开始发展了。 This produced a chain reaction，which________ ________ ________ ________ ________ ________ ________. 答案：　made it possible for life to develop 4．而当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。 But when I tried to step forward，I found I was carried________ ________ ________ ________ on the earth and fell over. 答案：　 twice as far as 5．“天哪，”我大声说。“引力改变了，走路也的确需要练一练了。” “Oh，dear，” I cried，“walking does need a bit of practice________ ________gravity has changed.” 答案：　now that atmosphere n．大气层，空气；环境，气氛 教材原句P25：They were in time to produce carbon，nitrogen，water vapour and other gase