CHOOSE THE WORD OR PHRASE (A,B,COR D) THAT BEST FITS THE BLANK SPACE...

34-43: Choose the word or phrase (A,B,Cor D) that best fits the blank space in the following passage. Planet earth is a part of a system of planets and their moons, as well as numerous asteroids and comets which ...(34).... around a huge star we call the Sun. The Sun itself...(35)... of gas. Nuclear reactions inside its core ...(36)... the heat and light that make life on the earth ...(37)... . The earth is the third of four small terrestrial ( Earth- like) planets that orbit close to the ...(38) ... . Further out in our solar System are four huge gas planets, whiledistant Pluto, ...(39)... planet, is made ...(40)... rock and ice. Our Earth is one of ten the planets that orbit the Sun- a huge, burning-hot star in the centre of our Solar System. The Solar System and all the stars in the ...(41)... are part of our galaxy- the Milky Way, which ...(42)... as many as 200 billions stars. Beyyond our galaxy ...(43)... millions more galaxies. They all add together to make up the Universe.