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于此项目比较小,除了严格按照软件工程的科学方法开发软件、认真建立文档、编码阶段写详细的注释外,对于维护可能会出现用户维护需求频繁的现象,只要问题可能在数据库丢失,数据库版本等问题上。

本系统的功能是为使用者提供方便的管理,可以保存一些联系人也可修改和进行分组等操作,但在网站中也有以下不足之处,例如:

在注册模块中,由于密码保护问题采用的是组合框控件,为了给用户提示,所以在可供选择项里面插入了这样一行数据:“请选择密保问题”,并且是作为默认选项显示在界面中的。这样的话“请选择密保问题”也作为一个问题存进了用户信息,因此即使用户不选择密保问题,只要输入答案,系统也默认注册用户填写了密保问题。后来将代码进行修改,首先对密保问题进行判断,如果用户没有选择密保问题,即默认选择的是“请选择密保问题”,这时就对答案输入框的输入字符进行检测,如果用户输入了答案,就弹出一个提示让用户选择一个密保问题;如果用户没有输入答案,就把密保问题设置为空,然后存进数据库。

用户注册模块中,存在注册新用户的不合理。之前的设计中,不但任何人都可以进行注册,而且注册用户还可以对联系人的信息进行修改,这样就失去了管理员存在的意义。后来进行修改之后,当用户需要注册时,首先需要输入管理员密码,也就是需要通过管理员的同意之后注册的用户。当用户注册成功之后进入到主界面,也对注册用户进行了限制。除了管理员,其他的注册用户都只能对联系人信息进行查看而不能修改,这样就防止了除管理员以外的其他人对联系人信息进行修改。

阅读理解

阅读理解

     If you have ever been rock climbing, you will know that it is not a very easy sport. In fact, you probably felt quite defeated when you first tried to do any serious climbing. Indoor and outdoor rock climbing are

both extremely demanding and require practice to get good at. It is one of the most physically and mentally demanding sports.

     There are three basic types of rock climbing. Top roping is the most common type and the climber

need to climb with a partner. The second type, which is very similar to top roping, is called lead climbing.

In both of the types, the climber can sit off the wall and rest on the rope. The third type is called

bouldering. Bouldering is a type of free climbing without any ropes. This is the most demanding of all

climbing types. The climber must be able to complete the climbing without taking a rest on the rope.

     Believe it or not, climbing is said to be about 75% legs and only 25% arms. To climb efficiently and

successfully, a person needs to have a wonderful technique. One of the major rules of rock climbing is to

always have three points touching the wall, whether it is both feet and one hand, or one foot and both

hands, as it is much easier to have your weight rest on three points than on two. Another important idea to grasp is that your arms in most cases will do the climbing; they only hold you into the wall so that your

legs are actually pushing you upward. Also, the closer you are to the wall, the easier it is to climb.

     Rock climbing may sound a bit too extreme for the everyday person, but it is really an amazing

workout. Once you get into the sport, and learn how to position your body and rest your weight, then you can begin to deal with some difficult problems. The great thing about rock climbing is that it is mentally

challenging as well. You are constantly analyzing the way your body moves and how to do certain moves

on the wall. For anyone who wants to get into shape, rock climbing is a fun and effective way to exercise muscles.

1. What does the author think of rock climbing?

A. It is an easy sport.  

B. It is challenging.

C. It is quite dangerous.  

D. It is extremely difficult.

2. From the text we know that _____________.

A. indoor rock climbing is much easier than outdoor rock climbing

B. while rock climbing, people depend mainly on their arms

C. ordinary people can practise rock climbing

D. during climbing, the climber can always stop for a rest

3. While climbing, it is much easier for a rock climber if he __________.

A. takes a rope                      

B. has a partner

C. has three points touching the wall  

D. uses feet more often

4. __________ will make rock climb easier.

A. Keeping the body closer to the wall

B. Resting more often on the arms

C. Resting more often on the feet

D. Pushing forward without thinking of the problems

5. By rock climbing, one can _______.

A. get more weight and stronger muscles  

B. get both physical and mental exercises

C. have a terrible experience that will last long  

D. probably feel quite defeated

单项选择题