写出下列复合函数的复合过程，并求出它们的导数．（1）（2）

单项选择题OT sells $1,000,000 of 10-year, 4% bonds at par plus accrued interest. The bonds are dated January 1, 20X0, but due to market conditions are not issued until May 1, 20X0. Interest is payable on June 30 and December 31 each year. Journal entry on interest payment date (June 30, 20X0) Dr. Accrued interest payable [填空1] Dr. Interest expense [填空2] Cr. Cash [填空3]

单项选择题6、 A、A B、B C、C D、D