A:have had; is running
B:had ; is running
C:have; has been ru
D:have had; has been ru
次数
∠i
∠r
1
70°
2
45°
3
30°
下列句子中划线的字的读音不正确的一项是( )
《孙权劝学》选自____,它是由北宋____(人名)主持编纂的一部____体通史。
The price system is a complex network composed of the prices of all the products bought and sold in the economy as well as of a great number of services.