土壤氮素无效化或损失途径有（）、（）、（）、（）和（）。
参考答案：粘粒对铵的固定、有机质的固定、硝酸根的淋失、氨的挥发、反硝化脱氮
— Let's ____________ English. OK?
— OK. I want to talk ____________ you ____________ that story book. [ ]
A. speak, to, about
B. talk, with, with
C. speak, with, about
This kink of milk________ well . It________ out soon.
A．is sold, sells
B．sells; is sold
C．is sold, will be sold
D．sells, will be sold
