但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。 4.So _________ life will continue on the earth for millions of years to come ______________ whether this problem can be solved.
所以, 在未来的数百万年中, 生命能否在地球上延续取决于这个问题能否得到解决。 5.As a result of this event, a great dust cloud formed in the sky ______________ the sunlight.
由于这一事件,天空中形成一大团尘埃,遮住了阳光。 Unit 4 Astronomy: the science of the stars twice as far as
基 础 自 主 梳 理 whether will depend on blocking out
返回目录 Ⅳ.课文回顾
The earth was just a cloud of 1.________ (dusty) after the “Big Bang”. The 2.__________(explode) of the earth produced water vapour, which turned into water when the earth 3.________(cool) down. Water allowed the earth to dissolve harmful gases into the oceans and seas. That made 4.________ possible for life to begin to develop. The 5.________(arrive) of small plants encouraged the 6.___________(develop) of early shellfish and all sorts of fish. Many millions of years later the first green plants began to appear on land. Later land animals appeared. Unit 4 Astronomy: the science of the stars dust cooled 基 础 自 主 梳 理 explosion it arrival development 返回目录
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