把句子改成主语从句1.His discovery has not yet been proved.What___ 2.D
2个回答

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正确答案如下：

1.What he discovered has not yet been proved.

2.Whether the other astronomers accept his ideas remains a question.

3.How the first appearancea of life on earth mystery is still a mystery to scientists.

4.Why the earth is becoming warmer is an important topic for research..

5.It amazed everybody that Stephen Hawking at 65 experienced zero gravity during a flight.

6.It is a surprise that plauto is no longer considered a planet in our solar system.

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