Chemistry seems to be for me of all the subjects.A. difficultB. too difficultC. more diff

问题补充：

Chemistry seems to be for me of all the subjects.

A. difficult

B. too difficult

C. more difficult

D. the most difficult

答案：

A. difficult

B. too difficult

C. more difficult

(答案→)D. the most difficult

解析：考查最高级.句意:对于所有的学生们来说,化学好像是最难的.根据for me of all the subjects.可知应该选形容词的最高级，故选D