—Yes, he was the first Chinese writer ________ won the prize for children's literature.
A:who
B:whom
C:that
D:which
天然金刚石由含碳物质在地下130~180千米的高温、高压环境下重新结晶而成。其形成于( )
与生物体正常生长发育密切相关的生理过程是 ( )
△ABC的内角A,B,C的对边分别为a,b,c,已知sinB+sinA(sinC﹣cosC)=0,a=2,c= 2 ,则C=( )