—What ________ did the country leave you after a year of your staying there?

—Well, I think what ________ me most was the friendliness of the people there. [ ] 

A. impression; impressed

B. was impressed; impressed

C. was impressed on; impressing

D. had impressed; was impressed

电脑在许多方面可以替代人脑，这属于（）

A.异构同功

B.同功异构

C.一构一功

D.一构多功