土壤中磷的释放
参考答案:有机态磷和难溶性磷酸盐在一定条件,转化为植物可以吸收利用的水溶性的磷酸盐或弱酸溶性的磷酸盐的过程是其有效性提高的过程,通常称之为磷的释放。
Social practice is _____ opportunity for students to gain _____ better understanding of how society operates.
A.the; the
B.the; a
C.an; a
D.an; the
Under the Constitution of Pakistan, 1973, explain the process of passing legislation in the Parliament (Majlis-e-Shoora). (10 marks)