A:荇藻(xìn)贮蓄(zhù)纤绳(qiān )周道如砥(dí )
B:羼水(chàn)蓦然(mù)胚芽(pī)猝不及防(cù)
C:打鼾(hān)告禀(bǐng)愤懑(mèn)断壁残垣(yuán)
D:荒谬(miù)癖性(pǐ)倒坍(tā)吹毛求疵(chī )
图中,与我国地势特征最接近的示意图是( )
已知 y=(a+1)x2+ax是二次函数,那么a的取值范围是 ____ .
On birthday, they buy flowers__________ birthday presents.