硬盘在计算机箱内,因而是内部存储器。()
A. 对
B. 错
39-1,38+2,37-3,36+1,35-2,34+3,…第40项为( )
A. 1-1
B. -1-1
C. 0-1
D. 0+1
某铁路线上有25个大小车站,那么应该为这条路线准备多少种不同的车票( )。
A. 625
B. 600
C. 300
D. 450
What does the woman think the man will do ()
A. Get more food and drinks.
B. Ask his friend to come over.
C. Tidy up the place.
D. Hold a party.