Task3 Directions：The following is a list of terms for library signs．(下略) A—reading，reference and copying B—staff only C—closed shelves for undergraduates D—information retrieval room E—journalist and magazine F—display and reading room for new books G—multi-media reading room H—reference department office I—novelty research I—lecture hall K—reading room for reference books L—return deposit M—reading room for Chinese social books N—title catalogue O—circulation for foreign books P—card catalogue ( )新书检索 ( )还书库