下面关于三大人种体质特征比较表达正确的一项是:()
A.肤色由北向南逐渐加深
B.肤色由北向南逐渐加浅
C.肤色由东向西逐渐加深
D.肤色由东向西逐渐加浅
参考答案:A
As long as we are alive, we are learning and, in fact, some of our most important learning takes place outside of school ______ in school.
A.better than
B.rather than
C.other than
D.more than
()能提高植物抗倒伏、抗旱、抗病能力。
A、氮
B、磷
C、钾
D、钙