—He may live No.l6, Horse Bridge Road, Ken Town.
A:where does Mr. Smith work
B:where Mr. Smith lives
C:how Mr. Smith comes back
D:when Mr. Smith goes home
魏晋时的中书省和门下省原本只是充当皇帝秘书的机构,后来权力逐渐增大,进而演变成了国家的核心机关。这反映( )
声音在空气中传播时,下列叙述中正确的是( )