读问句，选择对应的答句。

____ ①Let's go to the library.                                    A. Yes, I do.

____ ②Where is the teacher's office?                       B. Yes, it is.

____ ③Do you have lunch at school?                         C. Forty-six.

____ ④How many desks are there in your class?        D. OK.

____ ⑤Is that your pencil?                                          E. It's on the first floor.

—What does she like doing?—She doesn't like playing the trumpet __________ the piano.

      fools they were! They believed what the man said.

有学者认为“在唐朝虽然每年平均只有二三十人通过考试，但…这一制度为天资聪颖却非士族豪门出身的人提供了机会”材料所说的制度是（    ）