基于半联接的查询优化策略的主要思想是（）
题型：填空题
问题：
基于半联接的查询优化策略的主要思想是（）
题型：填空题
阅读理解
Dear Mom,
I don't think you understand my life. You think I should be studying all the time. I know you want
me to find a good job when I grow up, but I would like to have a wonderful time, too. You never think
about fun things for me to do like music, sports. Two days ago, when I was watching a football game on
TV, you asked me to stop and do my homework. After finishing my homework, still I couldn't read my
football magazines. You said I had to go to bed early. That was bad enough, but yesterday was the worst day. I bought some computer games, and put them in my bag so that you wouldn't see them. I told you I
had to do my homework first. I knew it was wrong to lie to you, but Mom, I didn't quite like what you
did to me! I really love you, Mom, but I wish you could try not to be so hard on me.
Love ,
Zhang Ning
1. Zhang Ning's mother wants him to_______ when he grows up.
A. be a good teacher
B. find a good job
C. work in a big city
D. have a good time
2. Zhang Ning' s mother asks him to
A. study all the time
B. do sports
C. watch TV
D. tell a lie
3. Why did Zhang Ning put the computer games in the bag? Because _________.
A. he didn't like them
B. he played them many times
C. he wouldn't let his mother find them
D. he would play them at school
4. What do you think Zhang Ning should do?
A. He should argue with his mom.
B. He should have a fight with his mom.
C. He shouldn't talk to his mom.
D. His letter could help his mother understand him better.
5. What's the meaning of the underlined word "lie"?
A. 躺
B. 离开
C. 撒谎
D. 告诉