SecurityUnit3Unit3LiuLuSecurityReadingSpeakingDiscussion&ViewingSecurity•Landoflock•“Locks”inheart•“Locks”oncampusReading•Warmup•Textunderstanding•Languagepointsstudy•DescribingpicturesWhataretheformsofsecurityandlock?Brainstorm!locksecurityWarm-upGreatWallfingerprintpasswordvideocameracastlechainsteelbarstripwirespadlocklatchelectronicalarmsystemsafebodyguarddoorWhataretheyregarding?Scanthetext!•dead-boltlocks•securitychains•padlock•barricade•accesscard•X-rayequipment•electronicfriskers•electronicalarmsystem•steelbars•tripwires•telephonethatcananalyzeDead-boltlocks,securitychains,electronicalarmssystemsandtripwireshavereplaced______...
