The firefighters soon got the fire in the building________.
A:under attack
B:under control
C:under construction
D:under repair
— I wss fifteen years old, I got a new bike from my father.
—You are so lucky. My father gave me at my age of fifteen.
用两个边长为5厘米的正方形,拼成一个长方形这个长方形的面积为____平方厘米,周长为____厘米。