搜题
王老师:19139051760(拨打)
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第1题

Scientists calculate the age of the earth according to the following EXCEPT _____.( )
·the processes of atomic change
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第2题

How long has it beesince life appeared ithe earth( )
·30,000 years
·300 millioyears
·2000 millioyears
·5000
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第3题

I5 billioyears from now, according to Sir James Jeans, the temperature othe earth _____.( )
·may rise sharply
·may
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第4题

The tone of the passage cabe described as _____.( )
·excited
·worried
·pessimistic
·optimistic
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