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Sharks are not all the same. In fact, there are nearly 400 different kinds. Most sharks never attack people. Only a special group of sharks can be dangerous. They kill an average 
of forty people every year. Let’s compare sharks with snakes. Snakes kill about 60,000 people every year. And let’s not forget that people kill 25,000,000 sharks every year.
We can understand from the above paragraph that ......

1 ) 

snakes are more dangerous than sharks

2 ) 

all groups of sharks are dangerous

3 ) 

sharks are more dangerous than snakes

4 ) 

most dangerous snakes never attack people

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