In the fragments of the text: “they may lose the desire to master whatever task you are asking them to do” (lines 12-13) and “then you have to do more than just present lessons in the app” (lines 18-19), the verb forms in bold express the ideas, respectively, of 
In the sentence of the text: “However, if you want people to continue using the app, and use it frequently and often, then you have to do more than just present lessons in the app” (lines 17-19), the connector However can be replaced, without any change in meaning, by 
In “… the orange has seeds and so is perpetual;…”, the transition words introduce an idea of
No trecho sublinhado acima, comprehensive significa
The words below were taken from the text and are used according to two grammatical categories; all of them in this text are, respectively, an adjective and a noun, EXCEPT
The function word As, in As children advance through the educational system (lines 06),
The term bow has several meanings, besides one in the text. It is used correctly in all of the sentences below, EXCEPT:
No trecho do segundo parágrafo – …efficiency in meeting user requirements. – considerando-se o contexto, a palavra meeting equivale, em português, a
No trecho final do segundo parágrafo – … a good database architecture should provide … – a palavra should pode ser corretamente substituída, sem alteração de sentido, por
No trecho do último parágrafo – For large databases, DBA functions will in fact require the full time services of a team of many people. – a expressão in fact indica
