It's true that beauty does not always meet with a single, uniform standard. A person's cultural background, for example, may influence __________ he or she find attractive in others.
A:that
B:which
C:what
D:when
已知f(x)在R上是奇函数,且f(x+2)=﹣f(x),当x∈(0,2)时,f(x)=2x2,求f(2015).
被子植物受精后,子房壁发育成果皮,胚珠发育成果实,受精卵发育成胚.