大自然的秘密.ppt

《大自然的秘密》自由朗读课文,用自己的话说一说课文里讲了一个什么故事??? ?????????”?”?”“???2??”???1“?1???????”???????2??????”??”2????““?3?”??”3????????1“?1????2??”????”??????1?1”???????????”????”?”????2??”???1????????122”?1??”“???????21?“???”???2??1?””????????”????”?”???”??????21??1??????”“?????????????”?1”??????”??????”????????“??”???”??????????????1“?2”??”??????ˉ?”???1??1?1?????????211?”?3”??”????”??????????????”????????ˋ??”????????1““1???”?????21????1????????????211?1??1??1?1???????”ˋ??”????????1““1???”?????211????2??1????““”?1????2?1???1?3??“1?????”?”?????3?”3??”??”???ˉ?”???????21????1??1?1?????”ˇ?? ??????????2????”???”???”????“???“?1????????“??”?????”?33”??“???????1???2?“?1?????”???”1?????”??????”?”??1“?1??????3???1?”???”?”???”1???”?”1????12”????1??“?2??”1?“????????1??”????????????????”????”1????”??3????????”??”“?????“????????????2??”????”?????““?????”??????”??”“??”2?1?2???”?1???3??????”“?”?????”1?2???1???????“??”????“”?????““3”?????”“????“?“”??”????1??”???????????ˋ??”??”??”?”3?”????1??????1“??”ˋ??”???????????”“???”?????21????1???????1?”?”????????”?????”????”?”???????””“??1??”??””??????”2????????1?”?????”??1?”???”??”?????”????”??122”?1??”“?2??”???1?????????1???????1?1???????????21????1??????“”???2”??”?????”:???????????“”?????”????1???????”?1???????“”?????”????1????”??1?”??1?????”???2????????自由读课文1-2段,回答下面问题:1、作者去南太平洋加拉帕戈斯群岛有何目的?2、幼龟在进入大海的过程中会遇到什么危险?快速读课文3-12段,想想幼龟是怎么应对危险的。一只幼龟率先把头探出巢穴,却又欲出而止,似乎在侦察外面是否安全。如果把“探”换别的词,可以换成哪些词?▲为什么这里用“探”?探有试探、小心的意思。突出幼龟的谨慎。那只先出来的幼龟,原来是龟群的“侦察兵”,一旦遇到危险,它便会返回龟巢……反之,它们会争先恐后地结伴而出。幼龟面对危险,自有它们的应对方法,这就是自然界之道。可是我们人类却做了些什么呢,找出体现我们情感变化的词语。紧张焦急震惊悲叹正当幼龟踌躇不前时,一只嘲鹰突兀而来。它用尖嘴啄幼龟的头,企图把它拉到沙滩上去。我和同伴紧张地看着这一幕,其中一位焦急地对向导说:“你得想想办法啊!”?向导却若无其事地说:“叼就叼去吧,自然界之道,就是这样的。”向导极不情愿地抱起幼龟,把它引向大海。