將下列英語(yǔ)句子改為疑問(wèn)句
his discovery has not yet been proved（他的發(fā)現(xiàn)尚未證明）
改為：what.
Do the other astronomers accept his ideas?It remains a question.
（其他天文學(xué)家接受他的想法嗎?仍然是一個(gè)問(wèn)題)
改為：whether.
The first appearance of life on earth is still a mystery to scientists.
（第一個(gè)出現(xiàn)在地球上的生命對(duì)于科學(xué)家來(lái)說(shuō)仍然是個(gè)謎）
改為：How .
Why is the earth becoming warmer?It is an important topic for research.
(為什么地球會(huì)變暖?它已經(jīng)成為了一個(gè)重要的問(wèn)題進(jìn)行研究）
改為：Wht.
pluto is not longer considered a plante in our solar system .What a surprise!
（冥王星已經(jīng)不再是太陽(yáng)系中的行星,這真令人驚訝!）
改為：It is a surprise.