The damage caused by the Russian meteorite ___. A) could have been much worse

B) was huge

C) was greatly reduced by the early warning system

D) was much worse than the one in Siberia one hundred years ago

2. The Siberian meteorite ___.

A) hit a forest

B) hit a big city

C) caused glass to shower over people

D) damaged trees when it exploded

3. On the same day as the meteorite exploded over Chelyabinsk, ___.

A) there was another, related, asteroid event

B) there was another, unrelated, asteroid event

C) scientists realised that an even bigger asteroid could hit Earth

D) scientists issued a warning for 2046

4. The Russian meteorite ___.

A) had been predicted by scientists

B) came as a surprise

C) was too small to worry about

D) will come close to Earth again in the future

5. Experts say that comets and asteroids could ___.

A) wipe out all animal life, leaving only plants

B) kill a significant proportion of the Earth's human population

C) put an end to all plant and animal life on Earth

D) cause as much damage as the Hiroshima bomb

6. Earth has been relatively safe thanks to ___.

A) pure luck

B) luck and the protective force of another planet from our solar system

C) early warning systems set up by NASA

D) luck and our position in relation to the sun
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