Directions:Read the following text.Choose the bestword(s)for each numbered blank and mark A, B, C or D onANSWERSHEET.(10 points)Theres nothing more welcoming than opening a door foryou.1 the need to be touched to open or close, automatic doorsare essential in 2 disabled access to buildings and helpingprovide general 3 to commercial buildings.Self-sliding doors began to emerge as a commercial productin 1960 after being invented six years 4 by two Americans DeeHorton and Lew Hewitt.They 5 as a novelty feature, but astheir use has grown, their 6 have extended within ourtechnologically advanced world.Particularly 7 in busy locationsand during times of emergency, the doors 8 crowd managementby reducing the obstacles put in peoples way.9 making access both in and out buildings easier forpeople, the difference in the way many of these doors openhelps to reduce the total area 10 by them.Automatic doorsoften open to the side, with the panels sliding across oneanother.Replacing swing doors, these 11 smaller buildings tomaximise the usable space inside without having to 12 the wayfor a large, sticking-out door.There are many different typesof automatic door, with each 13 specific signals to t