If l represents the formula of accumulated interest, if deposit 1000 in the first year, the interest after n years would be I=1000((1+r/100)^n), r represents the percentage of interest rate. Is r > 8%?(1): The deposit earns a total of $210 interest in the first 2 yrs (2): ((1+r/100)^2)>1.15 我选了D ,可是答案是A。 我算出来(1)应该是r=15% (2) 应该是r=3 所以就选了D,是不是因为r=3不符合interest rate的实际情况,所以排除呢,还是因为别的原因的。 谢谢赐教!