试题与答案

简述在进行软件系统/产品的需求工作中所面临的挑战和应对方法。

题型:问答题

题目:

简述在进行软件系统/产品的需求工作中所面临的挑战和应对方法。

答案:

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题型:阅读理解

阅读理解。

Dear Sir,

      I have to travel every day from Souk Road to the airport. Two buses travel along the line: the number 49

and number 16. But by the time the number 16 bus gets to Souk Road, it is always full, so I can't get on it. I

have to wait for the number 49, because sometimes there are empty seats on it.

     The timetable says that there are buses from Souk Road to the airport every ten minutes. If this is so, why

do I have to wait half an hour for a bus every day?

     The regulations (规章) say that if there are empty seats on a bus, the bus must stop at every stop where

people are waiting. Why do the half-empty buses go straight past me when I am standing at the bus stop?

     The regulations say that no bus may carry more than 40 seated passengers (乘客) and 20 standing

passengers. Yesterday I was the first to get off the bus when it reached the airport. I counted (数) the other

passengers as they got off. There were 129 of them.

     It is clear that our bus companies break the regulations and think little of their passengers. Can nothing be

done to make your service (服务) better?

1. This passage is ________.

A. a message

B. a talk

C. a story

D. a letter

2. The writer has to take Bus No. 49 because _________.

A. it arrives on time

B. it is not always full

C. it travels faster

D. it has fewer seats on it

3. How long does the writer usually have to wait for a bus?

A. Ten minutes.

B. One hour.

C. Half an hour.

D. Nearly a day.

4. The regulations say that each bus may carry ______ passengers at most.

A. 20

B. 40

C. 60

D. 129

5. From the passage we can see that __________.

A. the bus service was bad

B. no passengers took their buses

C. no bus passed Souk Road

D. the writer was always the first to get on the bus

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题型:实验题

以乙烯为初始反应物可制得正丁醇(CH3CH2CH2CH2OH)。

已知两个醛分子在一定条件下可以自身加成。下式中反应物的中间产物(Ⅲ)可看成是由(Ⅰ)中的碳氧双键打开,分别跟(Ⅱ)中的2-位碳原子和2-位氢原子相连而得。(Ⅲ)是一种3-羟基醛,此醛不稳定,受热即脱水而生成不饱和醛(烯醛):

请运用已学过的知识和上述给出的信息写出由乙烯制正丁醇各步反应的化学方程式(不必写出反应条件)____。

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