人民法院裁定不准许原告撤诉，原告经传票传唤，无正当理由拒不到庭的，人民法院可以（）A

Once I thought love meant flowers, gifts and sweet kisses. So, I really doubted whether there was any love between my parents. Every day they were working hard to pay for my high school. They didn’t act in the romantic ways that I read in books and saw on TV, and they certainly didn’t send flowers to each other on Valentine’s Day (情人节).

One day, my mother was sewing a quilt (被子). I asked her if there was any love between her and my dad. She stopped and raised her head in surprise. Then she went on with her work without saying anything. I was very worried because I thought I had hurt her feelings. But after a few minutes she said, “Look at this thread (线). Sometimes it appears, but most of the time it disappears in the quilt. If life is a quilt, then love is the thread. It can hardly be seen anywhere or at any time, but it’s really there, and makes the quilt long-lasting.” I listened carefully but I didn’t understand her until the next spring.

My mother suddenly got seriously ill and had to stay in hospital for about a month. Every morning and evening after she returned from the hospital, my father helped her walk slowly along our country road. There were many beautiful flowers, green grass and trees, and the sun gently shone through the leaves. All of this made the most beautiful picture in the world. Reading their eyes, I knew they love each other deeply. From this experience, I realized that love is just a thread in the quilt of our lives. Love is inside, making life strong and warm.

小题1:What does the underlined sentence in the third paragraph suggest?

A．There is beautiful scenery where the writer lived.

B．There is true love anywhere in the world.

C．There is no love without beautiful flowers.

D．There is true love between the writer’s parents.小题2:Why didn’t the writer’s mother answer his question immediately?

A．Because her husband didn’t love her.

B．Because she was thinking of a better answer.

C．Because she didn’t love her husband.

D．Because the writer had hurt her feelings.小题3:What is the best title of this passage?

A．Love Is Everywhere

B．Love Is Always Romantic

C．Love: Thread in Quilt

D．Love Can Last Forever

（磁性）磁芯

鼻咽部（）。

A.腋窝组群

B.颈深上群淋巴结组

C.腹股沟组群

D.耳后及乳突区淋巴结组

E.左锁骨上群淋巴结

解决问题的最高表现形式是( )。

A．获得规则
B．理解概念
C．创造性
D．知识迁移

The notion of NP-completeness has provided a (66) mathematical definition for (67) intractability of NP problems. But this measure applies only to worst-case complexity. Being NP-complete does not (68) that a problem is intractable on the average case. Indeed, some NP-complete problems are " (69) on average", though some may not be. Levin initiated the study of average-case intractability, He showed that a bounded tiling problem under a simple distribution is average-case NP-complete. Since then, several additional average-case NP-complete problems have been shown within Levin’s (70) . This paper is intended to provide a comprehensive survey of average-case NP-complete problems that have been published so far, and the techniques of obtaining these results.

（66）处填（）。

A．relaxed

B．rough

C．rigorous

D．feasible