问题 多项选择题

蝶式套利的特点有______。

A.蝶式套利的实质是跨交割月份的套利活动

B.蝶式套利由两个方向相反的跨期套利构成,一个卖空套利和一个买空套利

C.连接两个跨期套利的纽带是居中月份的期货合约

D.在合约数量上,居中月份合约等于两旁月份合约之和

答案

参考答案:A,B,C,D

解析: 蝶式套利的特点有:蝶式套利实质上是同种商品跨交割月份的套利;蝶式套利由两个方向相反的跨期套利组成;连接两个跨期套利的纽带是居中月份的期货合约,数量是两端之和;蝶式套利必须同时下达3个买卖指令;蝶式套利与普遍的跨期套利相比,从理论上看风险和利润都较小。

改错题

短文改错(共10小题,每小题1分,满分10分)

此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。

此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

注意:原行没有错的不要改。

For as long as I can remember, I have been very bad

at arguing with people . As soon as someone agree                   76._______

with me, I get angry because I feel attacking, like the                77._______        

other person is out to show that I am right . And for                  78._______       

some reason , I hate being wrong! But my immediate                 79._______       

reaction is to get very defensive. I rise my voice, and                80._______       

I end up saying something I later regret. Needless to say,             81._______       

the whole thing ends with me blaming for myself , and the            82._______       

other person felt alienated (疏远的) from me. This                  83._______        

bothers me especially because my mother does the exactly

same thing and I hate!                                                  84._______       

Right now the problem is urgent because my relationship

with a wonderful boyfriend is in dangerous because of my                  85._______       

being afraid of being wrong .

单项选择题