Does the sentence "In the 1970s, there was just one school computer, in a small room attached to the science buildings." provide a valid answer to the question "Is Chinese a required or non-curriculum course?"

A: no

Does the sentence "As economic and demographic methods were applied to the study of history, the trend was increasingly to see the late Middle Ages as a period of recession and crisis." provide a valid answer to the question "Which author popularized a pessimistic view of the Late Middle Ages in his 1919 book?"

A: no

Does the sentence "Not religious himself, he insisted that Darwin's conclusions lacked empirical foundation." provide a valid answer to the question "What did Virchow feel Darwin's conclusions lacked?"

A: yes

Does the sentence "The latter models imply that changes in diversity are guided by a first-order positive feedback (more ancestors, more descendants) and/or a negative feedback arising from resource limitation." provide a valid answer to the question "What can be accounted for by a feedback between diversity and community structure complexity?"

A:
no