Air conditioners made in China have won      worldwide attentions and GREE has become     popular name.

A．a, the

B．/, a

C．/, the

D．the, a

查询订购单号首字符是“P”的订单信息，应该使用命令( )。

A) SELECT * FROM 订单 WHERE HEAD(订购单号，1)="P"
B) SELECT * FROM 订单 WHERE LEFT(订购单号，1)="P"
C) SELECT * FROM 订单 WHERE "P" $订购单号
D) SELECT * FROM 订单 WHERE RIGHT(订购单号，1)="P\