问题 多项选择题

RSA公钥密码体制是由()共同提出来的。

A.Rivest

B.Shamir

C.Shannon

D.Adleman

答案

参考答案:A, B, D

完形填空
It was Sunday afternoon. My brother and I were alone at home. My parents went for a party and asked me to look after my brother. I was doing my homework while my younger brother was watching TV. Suddenly the doorbell rang. Ding-Dong! My brother thought that it was our parents, so he opened the ________soon.
A tall man wearing a black raincoat stood outside. He said that he came to sell books and asked politely__________ our parents were at home.
Without thinking, my brother said,“No.” Then the man asked if we would like to ______some story books. I refused him. When I wanted to close the door, he suddenly pushed the door very _______and came into our house. He took out a ________and ordered me to tie up my brother’s hands with a rope. I tied up his hands in a special way so my brother could untie ______easily. The man then tied my hands up and locked _______of us in the kitchen. Soon, he went upstairs to _________money. I taught my brother to untie the rope on his ______. He then untied me. I rushed to the telephone to call the police, ______the line was dead. The doors were all locked from the outside. It was lucky that the man ______to lock the kitchen window. We got out of the house through the kitchen window and went to the _______ pay phone to call the police
Soon _______came to our house and the man was caught. By that time, my parents had come home. We told them the whole story. My parents were ______that we were not hurt. They told me that I should stop my brother from _______the door to strangers. I learned a lesson on safety.
小题1:
A.windowB.doorC.bookD.fridge
小题2:
A.ifB.whyC.whenD.how
小题3:
A.lendB.borrowC.sellD.buy
小题4:
A.politelyB.slowlyC.hard.D.quietly
小题5:
A.bookB.knifeC.giftD.pen
小题6:
A.himselfB.myselfC.herselfD.themselves
小题7:
A.noneB.neitherC.bothD.all
小题8:
A.look atB.look afterC.look likeD.look for
小题9:
A.feetB.handsC.neckD.legs
小题10:
A.andB.soC.orD.but
小题11:
A.wantedB.rememberedC.forgotD.tried
小题12:
A.farthestB.nearestC.largestD.smallest
小题13:
A.my friendsB.the policeC.the neighborsD.my parents
小题14:
A.gladB.angryC.sadD.sorry
小题15:
A.cleaningB.closingC.lockingD.opening
问答题 简答题