当处理水量较大，含铁量较高时，可采用( )工艺，曝气后水的pH值宜达到( )以上

完形填空（共10题， 每小题1 分，计10分）
My online friend is a kind and friendly girl. She is in America. Her   1   is Sophia. I meet Sophia   2   the Internet. She is twelve years old, and I am   3  years old, too.
First, I   4   a letter to her and introduce my hobbies, my school and my everyday life. A few days later, I get Sophia’s   5  . She   6   me a lot about herself. I learn that she loves study, sports and movies. She likes China and Chinese food very much. She tells me something about America too. Sophia is good at English, French, and Spanish(西班牙语), so I ask her to   __7   me with English. Sophia wants to learn some   8  , but it’s very hard for her.
From Sophia, I know   9   about the world outside. I would like to  10  Sophia some day in America.

小题1:	A．hobby B．name C．age D．job

小题2:	A．on B．for C．at D．in

小题3:	A．thirteen B．eleven C．twelve D．fourteen

小题4:	A．read B．see C．write D．draw

小题5:	A．book B．letter C．call D．photo

小题6:	A．asks B．says C．talks D．tells

小题7:	A．teach B．help C．give D．answer

小题8:	A．English B．French C．Chinese D．Spanish

小题9:	A．more B．less C．few D．little

小题10:

A．call B．write C．visit D．help