Busca de Exercícios - PUC - RIO DE JANEIRO - Inglês Aprenda a usar!

Taking into consideration the last paragraph of the article (lines 76-86), one can say that currentiy Musk's main ambition is to (A) produce airplanes as well. (B) make a rocket cost effective through reusability. (C) reduce the cost of the Falcon 9 in $43 million per flight. (D) make rockets 100 times cheaper than they are now. (E) save 30% of what is now spent with the project in future launches.

In the fragment of the text “It should fly again,” Musk said Friday’ (line 68) the modal verb “should” implies an idea of (A) advice. (B) necessity, (C) permission. (D) possibility. (E) request.

In the context of the article, the “sobering lesson” (line 52) that “the venerable space shuttle offers” (line 51) for new space companies is to (A) land a rocket at sea (B) make SpaceX an arresting success. (C) prove the existence of life in other planets. (D) reestablish payloads into space to $25 a pound. (E) re-fly a rocket without spending too much time and money.

According to the article, some of the companies which are proponents of reusable launch vehicles are, among other things, in fact looking forward to (A) sending people and things into space. (B) resuming the past Star Wars Program. (C) obtaining financial advantages from the American government. (D) surpassing NASA as a leading center for space research (E) making profitable contracts with the Russian and European companies.

According to the author, one positive side-effect of the high costs involved in reusing space shuttles in subsequent launches is the fact that (A) NASA has given up launching rockets. (B) NASA has largely given up on reusable spaceflight. (C)NASA has made an alliance with Russian and European companies. (D) Russia and European countries are now investing on refurbishing shuttles. (E) new space companies have been developing technology to reuse space shuttles with low costs.