两瓶法水中溶解氧的测定，是用（）滴定。A、稀盐酸 B、稀硫酸 C、硫代硫酸钠 D、氢

Huaihua Foreign Language School Lin Nan, Teacher of English Yingfeng Street, Huaihua, China Tel:0745-2709348 Fax: 0745-2709756 E-mail: Linan@21cn.com Zip code: 418000	Daqing Children’s Hospital Liu Hong, Doctor 12 Xingling Road, Changchun, Jilin 130027 Tel: 0431-5645972 13704358529(mobile) Fax: 0431-5768904 E-mail:cc1h@163.com
Red Star Farm Zhang Hui, Farmer Shanghai Village, Zhejing, 419100 Tel: 0745-6826194 13973098479(mobile)	Tiantai Taxi Company Yang Jun, Driver 235St. Tongzhi, Hangzhou, Zhejiang31007 Tel: 0571-7038385 Fax: 0571-7065834 E-mail: hzyi@163.com

小题1:You may telephone ______ for help if your younger sister is ill.

A．Yang Jun

B．Zhang Hui

C．Liu Hong

D．Li Nan

小题2: We can call ______ when we want to take a taxi to Hangzhou Railway Station.

A．13973098479

B．0745-2709348

C．0571-7038385

D．13704358529

小题3:Of the four, we can’t send fax to the ______.

A．driver

B．teacher

C．doctor

D．farmer

小题4:If you would like to learn English, please send an E-mail to ______.

A．Linan@21cn.com	B．cclh@163.com
C．hzyi@163.com	D．hhmx@163.com