俗话说“女大十八变，越变越好看”．你认为，发生这种巨大变化的时间主要集中在（ ）
A：婴儿期
B：青年期
C：青春期
D：中年期
⒈ no left turn
⒉ ride a bike
⒊ answer the phone
⒋ clean the room
⒌ play ping-pong
⒍ eat good food
⒎ make a kite
⒏ clean the board
⒐ draw pictures
⒑ go fishing
Housing prices ________ since the end of the last year. Therefore, it's time the central government ________ some effective measures to bring them under control.
判断对错．
10的40％等于4．
