A—severe pain B—surgeon C—skin test D—blood test E—eyesight test F—sick-leave certificate G—operation H—blood pressure I—toothache J—stomachache K—heart disease L—infection M—mental disease N—nervous disease O—lung disease P—high fever Q—dentist Example: (N) 神经疾病 (L) 感染 1.( ) 牙科医生 ( ) 肺病 2.( ) 验血 ( ) 精神疾病 3.( ) 病假证明 ( ) 高热 4.( ) 血压 ( ) 视力检查 5.( ) 胃痛 ( ) 手术