--- Mr. Green, I think physics is too difficult for me.
---Tom, work hard, you’ll find it not as difficult.
A. or
B. but
C. so
D. and
网友回答
A. or
B. but
C. so
(答案→)D. and
解析：考查情景交际和祈使句。“格林先生，我认为物理对我来说太难了。”“汤姆，努力学习，你就会发现他并不难。”祈使句+and相当于if条件句，翻译为“如果......，就会......。”用or的话，表示的是不好的结果。故选D。