What is the central idea of this passage from
Tyson's essay?
Black holes and stars are both gigantic balls
of gas
Black holes are a dangerous and powerful
force in the universe.
Black holes eat anything that comes within
the reach
od
Red giants are protected from black holes
by their size
DONE
B.

Read the excerpt from the common sense of bicycling: bicycling for ladies. the bicycle is capable of such high speed that there is a strong temptation to ride so fast as to cause over exertion or excessive perspiration. on the other hand some people ride too slow, causing a zigzag and uncertain movement. while exercising reasonable caution, be a fearless rider. when you come to a steep hill, if the road is clear, let it go as fast as it will. if you rid yourself of that ghost of fear, coasting is one of the greatest delights of cycling. which is the best paraphrase of the text?