The Bluebird Company has a $10,000 liability it must pay three years from today. The company is opening a savings account so that the entire amount will be available when this debt needs to be paid. The plan is to make an initial deposit today and then deposit an additional $2,500 a year for the next three years, starting one year from today. The account pays a 3% rate of return. How much does the Bluebird Company need to deposit today? （ ） A: $1,867.74 B: $2,079.89 C: $3,108.09 D: $4,276.34

在所给的算式中，填上+、-、×、÷和（ ），使得下面算式成立。（1）4 4 4 4＝1（2）4 4 4 4＝1（3）4 4 4 4＝2（4）4 4 4 4＝3[8分]

数列-4, 4, -4, 4, -4…….

表达式4^4\4*4*4/4 Mod 4的值是

【多选题】在下面 4 个 4 中间填上适当的运算符号和小括号使算式成立。 4 4 4 4=2 A. 4÷ 4 +4÷ 4=2 B. 4× 4÷ （ 4+ 4 ） =2 C. 4+ 4 +4 ×4=2 D. 4- （ 4 +4 ） ÷4=2 答

单音听辨。十个音为一组，含有变化音升4 [音频]/module/audioplay.html?objectid=525dda751efa2c644ef98798529599a7: *4 | 7 |升4 |-5 | 4 | 升4 |*4 | 4 |1 |*4 ||*4 | 7 |升4 |-5 | 4 | 升4 |*4 | 4 |2 |*4 ||*4 | 7 |升4 |-5 | 4 | 升4 |*4 | 6 |2 |*4 |

下列哪个是《圆舞曲》的乐段结构？ A: a(4）+b(4)+a(4)+c(4) B: a(4）+b(4)+a(4)a1(4) C: a(4）+b(4)+a1(4)+c(4)

京剧中的[原板][慢板][流水板]通常分别以( )拍记谱。 A: 1/4、2/4、4/4 B: 2/4、1/4、4/4 C: 2/4、4/4、1/4 D: 4/4、2/4、1/4

【单选题】4 A. 4 B. 4 C. 4 D. 4

要输出结果4*4=16，下列语句不正确的是( ) A: printf("4*4=16\n"); B: printf("4*4=%d",16); C: printf("4*4=%d",4*4); D: printf("4*4=%d,16");