下列哪项不是影响小麦生长的非生物因素（ ）
A：阳光
B：害虫
C：温度
D：水
祖国的山河一年四季美景如画，图中的描述属于凝华的是（ ）
He turned from side to side, eyeing himself in the mirror with a serious, studied ______ that soon changed into a smile.
