在软件开发中，需求分析阶段可以使用的工具是A．N-S图 B．DFD图 C．PAD图

My mind seems always to return to the day when I met Carl. The city bus stopped at a corner to pick up the daily commuters (someone who travels regularly to and from work), a group in which I was included. Boarding the bus, I looked for a place to sit. At last, I found a place near the back.

The man in the seat next to the one I was going for was an older man in a grey suit, well-worn dress shoes, and a black hat like I always pictured reporters wearing, but without the little press card. Seated, I began to read the book I had been carrying, which was Jack Kerouac’s On the Road. The man in the seat next to me introduced himself by asking if I had read any other book like the one I was holding. When I told him I had, he seemed to become interested, and so did I. He introduced himself as Carl and asked if I liked jazz, and I told him that I didn’t really listen to it, and that I liked rock and roll. Waiting for Carl to tell me that I should listen to real music, I was shocked when he just smiled and nodded. He said, "You remind me of myself when I was your age. I remember how my parents hated jazz and how they couldn’t see how I could listen to that awful noise. I bet your parents say the same thing, don’t they?" Now it was my turn to smile, amused with how right he was.

As the bus carried us from one side of the city to the other, Carl and I talked about a lot of different things. The more we talked, the more amazed I became at how much the two of us really had in common, despite the age difference. I haven’t seen him since we parted, but the thought of our connection that day rarely leaves my mind.

Carl really made me think about how much we can learn from each other if we just break through the blocks between us we’ve got. I mean, I would have never thought before that day that I could have anything in common with someone so much older than I. But Carl taught me that no matter what we are, we are all just people, and that we should make an extra effort to try and get to know our neighbors and people we see every day, regardless of age, race, religion, sex, or anything else. If we all take the time to attempt to understand each other, I think that the world would be a much better place that we could share together, as humans.

小题1:From the first paragraph we know that the author _____________.

A．did not mind whether there was a seat or not

B．hoped to have a seat when getting on the bus

C．thought the bus was overcrowded

D．looked for a seat but failed小题2:The author usually imagined a reporter as one who _____________.

A．liked jazz music

B．enjoyed talking with others

C．liked reading Jack Kerouac’s works

D．usually wore a black hat and press card小题3: After talking with Carl, the author realized that _____________.

A．older people were nice to talk to

B．he should have known Carl earlier

C．his parents were so different from Carl in listening to music

D．age was not necessarily a problem in heart-to-heart communication小题4:It can be inferred from the passage that _________.

A．the author hasn’t seen the old man since then

B．jazz music used to be more popular than rock and roll

C．the author was not satisfied with human relationships in the world

D．Carl made the author realize we humans live in peace and brotherhood

如果证券价格完全反映了一切公开的和非公开的信息，这种市场属于（ ）

A．无效市场

B．弱式有效市场

C．次强式有效市场

D．强式有效市场

普碳钢与耐候钢焊接时，可使用普碳钢焊条。

下列可引起菌血症的细菌是（）。

A.霍乱弧菌

B.肠炎沙门菌

C.伤寒沙门菌

D.大肠埃希菌

E.志贺痢疾杆菌

中俄双方一致认为，亚太地区的首要任务是建立开放、透明、平等、包容的安全和合作架构。中俄这一共识（）

①符合和平与发展的时代主题

②符合联合国 * * 的宗旨和原则

③表明世界多极化趋势不可逆转

④表明中俄两国的根本利益是一致的

A.①②

B.②③

C.①④

D.③④