题目信息
Every Monday, either the math department chair or the members of the department post a challenge problem to the student body, but usually it is so difficult that they cannot solve it in a week's time.
A:either the math department chair or the members of the department post a challenge problem to the student body, but usually it is so difficult that they
B:either the math department chair or the members of the department post a challenge problem to the student body, but usually the problem is so difficult that the students
C:either the math department chair or the members of the department posts a challenge problem to the student body, but usually the problem is so difficult that they
D:either the members of the math department or the department chair posts a challenge problem to the student body, but usually it is so difficult that they
E:either the members of the math department or the department chair post a challenge problem to the student body, but usually the problem is so difficult that the students
参考答案及共享解析
共享解析来源为网络权威资源、GMAT高分考生等； 如有疑问，欢迎在评论区提问与讨论
本题耗时：
已选答案：
正确答案：
B:either the math department chair or the members of the department post a challenge problem to the student body, but usually the problem is so difficult that the students
权威答案解析正在整理中，即将上线。
加入收藏
在线答疑
题目来源
Magoosh
