28. The teacher wrote down the counting numbers starting from 1 continuously on the blackboard: $1,3,5,7,9,11 \cdots$ After writing, the teacher erased two of the numbers, dividing the sequence of odd numbers into 3 segments. If the sums of the first two segments are 961 and 1001 respectively, then the sum of the two odd numbers erased by the teacher is $(\quad)$
A. 154
B. 156
C. 158
D. 160
【Solution】Solution: Since $961=31^{2}$, the first odd number erased is $31 \times 2-1+2=63$. And $961+63+1001=2025$,

Since $2025=45^{2}$, the second odd number erased is $45 \times 2-1+2=91$.
Therefore, the sum of the two numbers is $63+91=154$,
Hence, the answer is: A.