秦朝建立后，统一文字，以____________作为标准文字，后来又推行____________。
小篆；隶书。
(74) systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and (75) on the disk, and controlling peripheral devices such as disk drives and printers.
A．contents
B．diectories
C．directions
D．direct
（）とき、友達とお酒を飲みます。
A.かなしい
B.うれしい
C.さびしい
D.きびしい
