Question

40The first sentence of paragraph 2, "Astronomers at the time didn't recognize what they had uncovered,” most likely refers to which of the following?A At first, astronomers were unaware that Sirius B was a previously unknown kind of celestial body. B At first, astronomers refused to believe that Sirius was being circled by another star.C Using the technology available at the time, astronomers mistakenly identified the celestial body orbiting Sirius as an asteroid.D At first, astronomers believed that more than one celestial body orbited Sirius.E At first, astronomers didn't realize that the phenomenon involving Sirius could be repeated with many other stars.

Answer 1

A grande descoberta do texto foi que a estrela Sirius estava sendo acompanhada por outra estrela, a Sirius B. Contudo, essa outra estrela só foi vista por um produtor de telescópio. No texto, um cientista descobre que a estrela Sirius possui a companhia de outra estrela, contudo, os cientistas não acreditaram e demoraram muito para perceber esse fato. Por isso, a frase se refere aos astrônomos que não acreditaram que existia outra estrela em volta de Sirius. Portanto, a alternativa correta é: B.