Forsomereason,it__________alldayoverthetwoweeks.
A、rained
B、rains
C、wasraining
D、hasbeenraining
A、数字水印
B、数据加密
C、身份认证
D、数字签名
—Wouldyoumindmysittinghere?
—______.
A、Yes,sithere
B、No,youcan't
C、No,ofcoursenot
D、Yes,youarewelcome
A、与密码设备无关，与密码算法无关
B、与密码设备有关，与密码算法无关
C、与密码设备无关，与密码算法有关
D、与密码设备有关，与密码算法有关
Thebabyalwayssleepswithhiseyeshalf_____.
A、open
B、opening
C、toopen
D、opened