—Wouldyoumindmysittinghere?
—______.
A、Yes,sithere
B、No,youcan't
C、No,ofcoursenot
D、Yes,youarewelcome
MD-4散列算法中输入消息可以任意长度，但要进行分组，其分组的位数是（）
A、64
B、128
C、256
D、512
IfI_________Bush,I_________neverstartanywar.
A、am,will
B、was,will
C、were,would
D、had,would
Theschool_________wemetafamousscientistisnotbig.
A、which
B、onwhich
C、whose
D、where
---Haveyoumovedintothenewhouse?---Notyet.Therooms__________.
A、arepainting
B、arebeingpainted
C、arepainted
D、havepainted