A:软骨发育不全
B:白化病
C:唇裂
D:性腺发育不良
—____they ____ there by bus?
—____, they ____.
今年86岁的杨老先生少年时的习作“不要放鞭炮”写道:新年到,放鞭炮,蹦硼蹦硼虽热闹,金钱耗去太无聊!如今年国仇还未报,不如省钱买枪炮……。这篇习作写于( )