A-A+
A．Do his research on closely related topics.B．
问题详情
A．Do his research on closely related topics.
B．Spend more time in the library.
C．Write just one paper for all his classes.
D．Drop one of his courses.
参考答案
正确答案：A
解析：选项和paper，course有关。从Could you write your paper on three aspects of one topic?可以得知女士的建议。
