看图，完成对话。

1. —What's your ________ _______   ?                    

    —Science.

2. —Does Lucy like English _______Chinese?                    

    —She likes________

3. —Does Tom like_______    ?                    

    —Yes,_______ _______.                    

    —________is the woman with Tom?                    

    —I think she is his_______

4. —Who is your______teacher?                  

    —Mr. Wu.                  

    —Is he______with you?                  

    —Yes, he is.

5. —Does Jim often_______ _______?                

—Yes, he_______ _______                

—_______you?                

—I often play    ____,     ____.

关于河流水质采样垂线上取样点的确定原则正确的是（）。

A.评价三级小河时，不论河水深浅，只在一条垂线上一个点取一个样

B.水深不足1m时，取样点距水面不应小于0.3m，距河底也不应小于0.3m

C.水深为1～5m，只在水面下0.5m处取一个样

D.在一条垂线上，水深大于5m，在水面下0.5m处及距河底0.5m处各取样一个