特许经营
参考答案：
特许经营是指特许权授予人与被授予人之间通过协议授予受许人使用特许权授予人已经开发出的品牌、商号、经营技术、经营规模的权利。
英汉互译 阅读下面的短文，将划线部分的句子译成汉语或英语。
Thanksgiving Day was coming soon. 小题1:Miss Green gave her students special homework. “Please draw a picture to show your thanks.” said Ms Green.
Most students drew a turkey(火鸡) or other traditional things. But Douglas, a shy boy, drew a different thing. 小题2:他仅仅画了一只手。
His classmates were surprised at his picture. One child said, “It must be a farmer’s hand, because farmers keep turkeys.” Others guessed it was his father’s hand. 小题3:因为他家很穷, his father had to work day and night for money.
小题4:Miss Green asked the little boy whose hand it was. He answered, “It’s yours. You often take me by the hand to play outside and teach me how to hold a pencil.”
Oh, 小题5:the boy was showing his thanks to his teacher. Miss Green was moved and hugged(拥抱) the little boy.
分度头蜗杆副的传动比是（）
A.1：100
B.1：4
0C.1：220
