My uncle is sixty but he ____ than my father.[ ]

A. look young          

B. looks like young  

C. looks younger  

D. look the youngest

如图所示，凉铁板上出现了大量的小水滴，小水滴是由壶嘴喷出的水蒸气               形成的；要在铁板上产生更多的水滴，可以采取的措施有：________________________________________。高烧病人用冰袋降温是利用了_____________________。