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【单选题】
假定某商品价格在每季度里变化的标准差为0.65,商品的期货价格在每季度里变化的标准差为0.81,两种价格变化的相关系数为0.8。这时3月期合约的最佳对冲比率为多少?A.
0.703
B.
0.658
C.
0.642
D.
0.802
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举一反三
【简答题】A．She hopes that she will do better during the interview. B．She could not forget about her interview. C．She forgot to take the interview. D．She thought the interview was pleasant.
【单选题】五、《木兰诗》 (北朝民歌) (北宋) 郭茂倩编《乐府诗集》 1 .下列对《木兰诗》赏析 不正确 的一项是 ( ) A . “ 东市买骏马 ...... 北市买长鞭 ” 通过东、西、南、北的排比铺写,表现了木兰购买战马和用具的忙碌,渲染了战前的紧张气氛。 B . “ 旦辞爷娘去 ...... 但闻燕山胡骑鸣啾啾 ” 表现了木兰的女儿家心思和军情紧迫,使故事更具传奇色彩。 C . “ 万里赴戎机 ....
A.
A（0分）
B.
B（0分）
C.
（5分）
D.
D（0分）
【单选题】I don't think she could have done such a stupid thing yesterday, _____?
A.
do I
B.
could she
C.
did she
D.
has she
【单选题】Mary had always refused to cooperate with others because she believed that she could do better______ .
A.
single-handed
B.
than anybody
C.
in person
D.
all her own
【简答题】Though she felt it (fair) ______ to punish only her, she could do nothing but keep silent.
【简答题】成语接龙练习:请同学们根据前面一个词语的最后一个字作为下一个词语的开头第一个字,说出一个成语,比如:春种秋收——收放自如,求同存异——异想天开。注:开头一个字只需要和前词最后一个同音即可, 1. 倾盆大雨--()- 2.--()- 3.合家欢乐--()-
【单选题】She could do nothing but ____ her name under the circumstances.
A.
to change
B.
changing
C.
change
D.
changed
【单选题】She said that she would do _______ she could __________ her daughter laugh.
A.
what, make
B.
that, make
C.
what, to make
D.
that, to make
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