题目

（2010·吉林实验中学高三第二次模拟） 28. Not far from the club , there was a garden, ____ owner seated in it playing bridge with his children. A. whose          B. its   C. of  which        D. in which 答案：B（2013?宿城区模拟）原子序数84、相对原子质量为210的钋原子具有极强的放射性．下列对这种钋原子的叙述正确的是（　　）A．原子核内有210个中子B．原子核带210个单位的正电荷C．原子核内有126个质子D．原子核外有84个电子