A-A+
A．She doesn't need any help.B．She knows he's v
问题详情
A．She doesn"t need any help.
B．She knows he"s very busy.
C．He"s already helped her enough.
D．He doesn"t know enough chemistry.
参考答案
正确答案：D
解析：本题是因果题。从But I've never taken chemistry．So I'm not sure if you will like the results．可以得知女士不需要男士帮忙的原因。but，so表示厂转折和因果关系。
