About a business operating cycle, which of the followings is the most accurate？
A. 12 months
B. half a year
C. the time span during which cash is used to acquire goods and services
D. always longer than a year
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听力原文：M: Can you give an example of types of risks Banks face？
W: Yes. The major type of risks is called credit risk. It means a counterpart fails to perform. according to a contractual arrangement.
Q: What are they talking about？
(13)
A contractual arrangement.
B. A counterpart.
C. Many types of risks.
D. Credit risk.
A．debt instrumentB．letter of creditC．letter of guaranteeD．equities
A. debt instrument
B. letter of credit
C. letter of guarantee
D. equities
(2)
Assuming inappropriately large financial risk can cause investors to lose sleep.
B. Financial risk will not cause investors to lose sleep.
C. Seeking to maximize profits appropriately can cause investors to lose sleep.
D. No matter how much they earn, the investors will lose sleep.
A．It can avoid the necessity of carrying large amount of cash.B．You needn't purchase l
A. It can avoid the necessity of carrying large amount of cash.
B. You needn't purchase large amounts of traveler's checks.
C. You needn't use personal checks in places other than your own locality.
D. It can't provide an instant cash service in ease you run out of money.
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