[A] concentration 2022-01-06 Frontotemporal dementia is a disease 2022-01-06 [A] Although 2022-01-06 The relation between the two paragraphs is that in the 2nd paragraph the author 2022-01-06 What is the text mainly about？ 2022-01-06 [ A] introduced 2022-01-06 [ A] application 2022-01-06 [A] small 2022-01-06