. I looked down into the river and could

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问题选择题

I looked down into the river and could see Old Tom _____ by the boat.

A．swims

B．swam

C．to swim

D．swimming

答案

答案：D

选择题

将5mL0.4mol/LAgNO₃溶液与10 mL 0.3mol/LBaCl₂溶液混合，反应后，溶液中离子浓度最大的是　

A．Ag⁺

B．NO₃^－

C．Ba²^＋

D．Cl^－

选择题

There is _____ university in our city. _____ university is far from our school. [ ]

A. an; A

B. a; The

C. an; The

D. a; 不填