英语高手进,有两个单选帮忙分析一下……

题目

英语高手进,有两个单选帮忙分析一下……
1、The scholar standing over there is____the great mathematician,Chen Jing run,himself.有四个选项：A、no other but B、no other than C、none other than D、no one but 正确答案是C
2、Those boys helped____in their studies.选项是A.each other B.one another C、ond and another D.each and other 正确选B 为什么?

答案

1.B:no other than,正是、不是别的、只有正是、就是；
C:none other than不是别的而正是…；
D:no one but：除...外没人除...外没人.
2.B：one another,互相,彼此(两人或更多人之间).