问题 单项选择题

"事务的所有操作在数据库中要么全部正确反映出来要么全部不反映",这是事务的哪一个特性?

A. 原子性

B. 一致性

C. 隔离性

D. 持久性

答案

参考答案:A

解析:事务的原子性指事务的所有操作在数据库中要么正确反映出来,要么全部不反映。

单项选择题
完形填空

A young man once asked his grandpa: "Grandpa, how have you achieved so much in your life,

and yet are still full of energy? " The following was the grandpa's 46____ .

I think it has a lot to do with how a person looks at things. I call it "keeping your ____47 open "

First, realize that life is filled with surprises, and many are good ones.  If you don’t keep watching for them, you'll    48   half of the excitement. When you meet with challenges,   49   them bravely. Then they'll make you smarter and stronger. It is normal for you to make a  50   on the way to success. Don't be nervous. Just be thankful for what it taught you.

It's also   51   to decide exactly what you want. Your choices may create your successes or your failures.  52   think about all the ways ahead, and decide which one to follow. Then believe in  53 and go for it!

Most importantly, never   54   .The one who makes up his mind to win will be the winner.

Give life   55  that you've got, and life will give its best back to you .

小题1:A. dream          B.  answer         C.decision

小题2:A. eyes            B.  arms           C.mouth

小题3:A. control          B. enjoy            C.miss

小题4:A. face            B. avoid            C. forget

小题5:A.friend           B. mistake          C. plan

小题6:A. special          B. important        C. suitable

小题7:A. or.             B .But              C. So

小题8:A. yourself         B. itself         C. himself

小题9:A. stay up          B. come up       C.give up

小题10:A. all              B. none          C. either