Question

read the passage. there are several questions about this passage.

clearing out junk in space

1
\dont forget to take out the garbage!\ many teenagers hear this familiar parental reminder on a daily or weekly basis, depending on where they live. disposing of common household trash is a fairly simple task. but on spacecraft, astronauts must use a more sophisticated method for clearing out junk.

2
during us space shuttle missions from 1981 to 2011, astronauts had to perform many tasks, including cleaning windows, doing dishes, and taking out the trash. once they filled their allotted waste bins, crews moved the garbage to an area separate from their living quarters. there, the trash remained until the shuttle returned to earth. to eliminate odors from decaying refuse, astronauts used a special vacuum to vent foul smells into space.

3
today, the international space station (iss) uses a different process for trash disposal. since astronauts reside there for up to six months at a time, a large quantity of garbage accumulates. astronauts need to avoid a stockpile because some waste can grow microbes that pose health risks. to remove trash, a garbage truck of sorts visits the spacecraft periodically. this unmanned spaceship arrives with food, equipment, and other supplies. then, it is launched back to earth carrying hazardous waste—discarded food batteries and medical supplies, as well as harmless trash—used tubes and dirty clothes. upon reaching earths atmosphere, the cargo and craft incinerate. using expendable vehicles keeps manned crews safe by limiting their exposure to noxious substances, including chemical and radioactive waste.

4
one of the biggest problems with garbage in space is not the garbage

image of space junk

which sentence best describes the authors opinion of scientists ideas about relocating or eliminating space junk, as described in paragraph 8?

1. their ideas are farfetched and will gain very little support.

1. their ideas are interesting but may be difficult to carry out.

1. their ideas are excellent and should be put into action immediately.

1. their ideas are promising but putting them into practice will be very costly.

Explanation:

To solve this, we analyze the options by recalling typical author opinion patterns in reading comprehension (though the full paragraph 8 isn't shown, we use general logic):

• Option 1: "Far - fetched" and "little support" is too negative. Usually, scientific ideas for space junk aren't dismissed as having no merit.
• Option 2: "Interesting but difficult to carry out" fits common author views on innovative (like space junk solutions) ideas—they’re creative (interesting) but face practical challenges (hard to implement).
• Option 3: "Excellent and immediately" is too positive. Most authors don't push for immediate action on complex space - related ideas without noting challenges.
• Option 4: The passage (from what's given) doesn't mention cost, so this is unsupported.

Answer:

1. Their ideas are interesting but may be difficult to carry out.