题目内容：

    An ice cream sundae（圣代）is a special treat that many enjoy. And in summer it is the perfect dessert to cool down with after a hot day. Of course, ice cream in any form is a dessert no child could miss either. Back in the 1890's there was an old-fashioned ice cream store in Two Rivers, Wisconsin. It was owned by a man named E.C. Berners. One day a boy named George came into the store and ordered a bowl of vanilla ice cream. He looked across the counter and noticed the bottle of chocolate syrup（糖浆）that was used in making ice cream sodas. He asked if the owner would add some to the top of his vanilla ice cream. The owner agreed and George said that it tasted really good. Other customers started to order chocolate syrup over their ice cream too. It very quickly became quite popular to do so.

But in those days ice cream cost five cents and adding the chocolate syrup made it too expensive for Berners to continue serving the ice cream that way for the same price. At last Berners came up with an idea — to sell ice cream with chocolate syrup on Sundays only.

Many years later the new name was invented by an unknown trader who thought the treat should have a name as fancy as its taste. That is how today when we enjoy ice cream with chocolate syrup it is now called a “sundae”.

根据短文内容,判断正（T）误（F）。

1.According to the passage, a sundae is in fact ice cream with chocolate syrup on it.

2.Only children liked to eat the sundae at first.

3.To save money, Berners sold ice cream with chocolate syrup on Saturdays only.

4.An unknown trader invented the name of “sundae”.

5.The passage is mainly about the history of ice-cream sundae.