问题 单项选择题

从当前的情况看,演化式原型法存在的问题是

A.用户很难适应这种系统开发方法

B.能适应此方法的系统分析员非常少

C.该方法的成功率较低

D.系统开发的时间和费用难以控制

答案

参考答案:D

解析: 演化式原型法非常灵活,但缺乏严密性。使用这种方法有潜在的难以控制系统开发时间和系统开发费用的问题。

阅读理解

       Last week, 169 Junior students at No. 35 Middle School of Shenyang took their first no-teacher

exam. After the teacher handed out the exam paper, he left the room and never came back. A student

collected in the papers when the exam ended.

       "That test was not only a test of knowledge, but also a test of moral. We wanted to show students

how important honesty is." said Cai Wenguo, the school's headmaster. The school says no cheating

happened in the test. Next year, it wants 80% of its exams to be without teachers. But students have

different ideas.

       " I was happy and excited during the exam because my teachers trusted me," said Lang Yudan, a

13-year -old girl in Class 11.

       "Schools must trust students a lot not to use invigilators(监考人). But I think it is too early. Some

students will cheat if there are no invigilators. And the students will not be able to ask for help when

needed." said Hua Sha.

       " I don't like having invigilators in exams. When they walk around the classroom, they make me

nervous. I would get higher marks without them in the room because I would feel more relaxed." Liu

Qingxi said.

       " I think it's very important to have invigilators in exams.  Many students want to check their

answers with each other after they have finished papers. And they can also keep the classroom in

order when something unusual happens. They may make me nervous, but I still think we need them."

Shangguan Yuan said.

       Not using invigilators may be a good idea.  But before using it,  schools must tell students the

importance of honesty and try to find ways to solve something unusual in exams.

1. The passage mainly talks about_______.

A. how to pass an exam            

B. how to make students honest  

C. whether there is cheating in exams  

D. whether invigilators are needed in exams

2. No. 35 Middle School of Shenyang held a no-teacher exam to ______.

A. let the students have a good rest  

B. teach the students in a better way  

C. help all the students pass the exam      

D. find whether the students were honest

3. From what the students have said, we know______.

A. invigilators really help them a lot          

B. all of them think it is a good idea  

C. something unusual never happens in exams  

D. not all of them agree with the headmaster

4. What does Hua Sha think about no-teacher exams?

A. It's a good idea to have no-teacher exams but something must be done first.

B. If there are no invigilators, the students will certainly get lower marks.

C. Exams without invigilators will never be held since students are not honest.

D. She thinks it's the best way to show that schools trust their students a lot.

5. In the sentence " And they can also keep the classroom in order when something unusual happens",

"they" refers to ________.

A .students          

B. headmasters      

C. invigilators    

D. schools

单项选择题