Answer:
1. D , 2. A, 3.B , 4.A, 5.B
Explanation:
In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signalling appliances and tracks are sometimes collectively referred to as an interlocking plant. An interlocking is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe.
Explanation:
El tema central del cuento es la muerte inexplicable de Alicia, la protagonista, víctima de un animal extraño que vive en su almohadón de plumas. Los otros dos temas que aparecen en el título del libro, el amor y la locura, también están presentes en el cuento, aunque de manera secundaria.