According to the man, why are there so many unhappy adults in the world？A．Because they are

According to the passage, why are the studies that conclude that dolphin intelligence is "

According to the man, why can t some children do well in school examinations？A．They don"t

According to the man, why do the elderly not like using the computerized banking services？

According to the man, why did the bear attack him and his friends？A．Because they attacked

Why is it easy to avoid meeting animals according to the man？A．Because he can run very fas

According to the man, which of the following is NOT the reason why the party is successful