In the following sentence:
Old Connections, a telecommunications museum in Seattle, with a working exchange from the 1940s, shows/showed how telephones brought us together, but also tore us apart.
I feel both shows and showed can be used here. But my teacher told me the standard answer was shows.
But is this really the case ?
BTW, this is a follow-up question to my old one The simple past tense confusion, why use "was" instead of "is" here, "the classic 1984 was a broader critique of totalitarianism ..."?
Because Chinese does not have verb tense, when it comes to the case that both present tense and past tense seem to work I am always confused.