25. Oh, the fire is getting nearer and nearer. It is _____ our children and old people.

填入下面一段文字横线处的语句,最恰当的一句是（ ）在全球变暖的大背景下,纳木错水位逆势上涨,吸引了众多科学家的目光。研究认为,近年来纳木错地区低云量的显著增加是造成纳木错水位上升的原因之一。 ,伴随气温的升高,蒸发量不一定随之增加,它还与云量、日照、辐射等因素密切相关。

_______, the more exercise you do, the richer your knowledge will be.

It is so nice to hear from her. _______, we last met more than thirty years ago.

Do you know _________ this iphone5 belongs to— Let me see. Oh, it’s __________.