Read the text. Then choose the correct answer for questions 31-32

Read the text. Then choose the correct answer for questions 33-34.
Is there life beyond planet Earth? Astronomers revealed a new lead in the search for extraterrestrial life last Tuesday. For the first time, they have discovered a planet outside of our solar system that could possibly sustain life. The planet, named Gliese 581c, was found by a European Southern Observatory telescope located in La Silla, Chile. "It's a significant step on the way to finding possible life in the universe", says Michel Mayor, one of the 11 European astronomers on the team that discovered the planet.

The planet has Earth-like temperatures, even though the star it closely orbits, known as a red dwarf, is much smaller than our sun. Astronomers do not yet know if there is liquid water on Gliese 581c. “Liquid water is critical to life as we know it", says Xavier Delfosse, an astronomer on the discovery team.

33.What is the main idea of the text?

1. 
   Scientists are working hard to find new planets.
   
2. 
   A planet should contain liquid water to sustain life.
   
3. 
   The newly found planet will attract many scientists.
   
4. 
   A new planet, which may contain, life has been found.
   

34.In comparison to the "red dwarf" our Sun is ...

1. 
   almost the same size
   
2. 
   cooler
   
3. 
   much bigger
   
4. 
   much smaller
   

3-variant