A:珍馐(xiū)渌水荡漾(lǜ)襟怀(jīn)钟鼓馔玉(zhuàn)
B:修葺(qì)无耻谰言(lán)绸缪(móu)楼观亭榭(guàn)
C:碣石(jié)失所怙恃(gǔ)扁舟(Piān)喟然长叹(kuì)
D:聒躁(guō)呱呱而泣(gū )戏谑(nÜè)秉烛夜游(bǐng)
He is kind to me. He always ____ ____ ____ me with the problems in my study.
下列单项式书写不正确的有( )
①312a2b; ②2x1y2; ③-32x2; ④-1a2b.