Considerando que A e B são conjuntos quaisquer, analise as assertivas abaixo e assinale a alternativa correta.

I. A ⊂ (A∪B)
II. (A ∩ B) ⊂ A
III. (A − C) ⊂ A

Sabendo que três lâmpadas piscam em períodos diferentes: 8s, 10s e 12s, e que elas acenderam juntas às 20h 00min 00s, a que horas elas voltarão a piscar juntas?

Quanto ao produto das raízes da seguinte equação, é correto afirmar que é um número:

x+3/2 − 10/3 = −2/x+3

Which of the alternatives below is a compound noun taken from the article?

Which of the sentences below contains a relative clause?

Which of the alternatives below presents a sentence in the same verb tense as “By 1977, just eight of the apostles’ towers had been built” (l. 28)?

Mark the alternative that fills in, correctly and respectively, the blanks in the fourth paragraph:

In Portuguese, the underlined word “shards” (l. 41) means:

What do the words in bold “Its” (l. 01), “his” (l. 10), “it” (l. 17) and “they” (l. 22) refer to, respectively?

Analyze the statements below about the excerpt “The Sagrada Família was founded as an expiatory church” (l. 17):

I. It is an active voice structure.
II. It is in the simple past.
III. Its interrogative form is “Was the Sagrada Família founded as an expiatory church?”.

Which ones are correct?