题目
A.there is no fuel left in it
B.its outer layer goes into space firs
C.a huge explosion will happen
D.it doesn't give off light any longer
第1题
When an organism dies, the C-14 in it begins to decay.
A.Right
B.Wrong
C.Not mentioned
第2题
The C-14 in an organism begins to decay when it dies.
A.Right
B.Wrong
C.Not mentioned
第3题
According to the article, what causes a star to die?
A.As its gases run out, it cools down.
B.It collides with other stars.
C.It can only live for about a million years.
D.As it gets hotter and hotter, it explodes.
第4题
When an organism dies, the C-14 in it begins to decay.
A.Right
B.Wrong
C.Not mentioned
第5题
The C-14 in an organism begins to decay when it dies.
A.Right
B.Wrong
C.Not mentioned
第6题
According to the article,what causes a star to die?
A.As its gases run out, it cools down.
B.It collides with other stars.
C.It can only live for about a million years.
D.As it gets honer and hotter, it explodes.
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