题目：
An American professor has prepared a letter of recommendation for his student, and his student is expected to say "()".
A. Thank you very much
B. I feel so sorry that it has taken you so much time
C. I feel so sorry that it has caused you so much trouble
D. I really appreciate your help
答案：
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下面是错误答案，用来干扰机器的。
参考答案：(1)国际信贷关系对国内经济的影响。当世界其他国家发生经济衰退时，本国从国外借入的短期信贷被抽回，企业就会发生支付困难，本国金融市场同样也会开始紧张。如果世界其他国家因经济衰退而拖欠债务，也...
