实现限制损失、滚动利润原则的有利工具是( )。 A．止损指令 B．买低卖高或买高

Mrs. Black was a poor old woman and she lived in a small village. Her husband died ten years ago. But she had a 24-year-old daughter. Her name was Alice. She worked in New York and lived there. It was far away from her mother's village, and she was not happy about this. One day Alice said to her mother, "I've found a good job in Boston, and I can make a lot of money there, so I will go to work in Boston next week. But don't worry, Mum. I'll send you some money every week. "

A month later, Mrs. Black was very angry. She decided to go to see her daughter in Boston on a train. When she saw her daughter, she said, "Alice, why do you never call me?"

Alice laughed, "But mother," she said, "you haven't got a telephone."

"No", she answered, "I haven't, but you have got one. "

小题1:Mrs. Black lived __________.

A．in Canada

B．in Australia

C．in England

D．in America小题2:Mrs. Black lived __________.

A．alone

B．with her husband

C．with her daughter

D．with her mother小题3:Alice decided to work in Boston because __________.

A．New York was too far from her mother's village

B．Boston was near her mother's village

C．she had found a good job there

D．she thought Boston was a quiet and nice place小题4:A month later, Mrs. Black went to see her daughter in Boston __________.

A．by air

B．by train

C．by bus

D．by sea小题5:Alice had never telephoned her mother because __________.

A．she didn't have time to do so

B．her mother didn't have a telephone

C．she didn't want to spend money on calling

D．her mother didn't know how to make a telephone call

（）投资在历史上曾盛极一时，在19世纪的英国和20世纪20年代的美国，大部分国际企业都是以此种形式进行的。

A、国际贸易

B、合同性安排

C、间接投资

D、直接投资

下列药品中不属于外服药的是[ ]

A．酒精    

B．碘酒   

C．风油精  

D．板蓝根

根据观测结果，已建立y关于X的回归方程=2.0+3.0X，则X变化1个单位，y平均变化单位个数为（）。

A．1

B．2

C．3

D．4

E．5

南北沿海运输大通道，以( )枢纽机场为节点，与国际航线网络相衔接。

A．北京和上海
B．北京和广州
C．上海和广州
D．深圳和广州