多种信用风险组合模型被广泛应用于国际银行业中，其中()直接将转移概率与宏观因素的关系模型化。然后通过不断加入宏观因素冲击来模拟转移概率的变化，得出模型的一系列参数值。
A. CreditMetrics模型
B. CreditPorffolioView模型
CreditRisk+模型
D. CreditMonitor模型
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The common etiquette observed by ail communities is to ______.
A. pay a compliment to beautiful women
B. respect senior citizens
C. keep fingers as clean as possible
D. foster romantic love for a lady
随机变量Y的概率分布表如下：
随机变量Y的方差为()。
A. 76
B. 16
C. 6
D. 68
假设某股票一个月后的股价增长率服从均值为2％、方差为0．01％的正态分布，则一个月后该股票的股价增长率落在()区间内的概率约为68％。
A. (l％，3％)
B. -0.40%
C. (99％，01％)
D. (98％，02％)
It can be inferred from tile passage that "Giver" is a book which ______.
A. contains many new and difficult words
B. has many levels of meaning
C. is easy to read
D. is about a boy's discovery
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