------
## 最终结论
```python
def does_Contain_B(start, step, number):
    if step == 0:
        return start == number
    if step > 0:
        while start <= number:
            if start == number:
                return True
            start += step
    else:
        while start >= number:
            if start == number:
                return True
            start += step
    return False

# Test cases
assert does_Contain_B(1, 7, 3) == True
assert does_Contain_B(1, -3, 5) == False
assert does_Contain_B(3, 2, 5) == False
```