第二节 简答题（共3小题，满分6分）
阅读下面短文，根据第73至第75小题的具体要求，简要回答问题。
A small dog should be belly-up after eating a handful M&M’s, at least according to conventional wisdom. But watching “Moose”, a friend’s five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs?
Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate —it can poison them and in some cases is fatal. Chocolate’s danger to dogs depends on its quality.
