請依下文回答第 36 題至第 40 題 About 28 percent of airports around the world are using biometric technology as part of their airport security, which 36 airports to streamline the screening process using machines that can verify identities by scanning faces, irises, or fingerprints. Advocates say the technology could make boarding passes 37 . While advocates of the technology say that automating some of these processes would free up security personnel to 38 monitoring travelers for suspicious behavior, other experts like Barnett worry that screeners will become too dependent on the technology and it will only serve to 39 their senses. European airports have been much quicker to embrace the biometric technology than American airports. However, the U.S. Department of Homeland Security does 40 use the technology for checking employees into some areas and for travelers enrolled in its PreCheck program. 【題組】38 (A)do away with (B)pick up (C)watch out for (D)focus on