【雅思大作文考官范文】——第十九篇:'university subjects'话题

本文探讨了大学生专业选择的两种观点:一种认为应根据个人兴趣自由选择,另一种则主张应侧重于未来就业前景良好的实用性学科,如科学与技术。文章分析了两派观点的理由,并提出了作者的见解。

题目

     Some people think that all university students should study whatever they like. Others believe that they should only be allowed to study subjects that will be useful in the future, such as those related to science and technology.

     Discuss both these views and give your own opinion.

     有些人认为所有的大学生都应该学习他们喜欢的东西。另一些人认为,应该只允许他们学习对未来有用的科目,例如与科学和技术有关的科目。
     讨论这两种观点,并给出自己的意见。

范文

     People have different views about how much choice students should have with regard to what they can study at university. While some argue that it would be better for students to be forced into certain key subject areas, I believe that everyone should be able to study the course of their choice.

     There are various reasons why people believe that universities should only offer subjects that will be useful in the future. They may assert that university courses like medicine, engineering and information technology are more likely to be beneficial than certain art degrees. From a personal perspective, it can be argued that these courses provide more job opportunities, career progression, better salaries, and therefore an improved quality of life for students who take them. On the societal level, by forcing people to choose particular university subjects, governments can ensure that any knowledge and skill gaps in the economy are covered. Finally, a focus on technology in higher education could lead to new inventions, economic growth, and greater future prosperity.

     In spite of these arguments, I believe that university students should be free to choose their preferred areas of study. In my opinion, society will benefit more if our students are passionate about what they are learning. Besides, nobody can really predict which areas of knowledge will be most useful to society in the future, and it may be that employers begin to value creative thinking skills above practical or technical skills. If this were the case, perhaps we would need more students of art, history and philosophy than of science or technology.

     In conclusion, although it might seem sensible for universities to focus only on the most useful subjects, I personally prefer the current system in which people have right to study whatever they like.

先看效果: https://renmaiwang.cn/s/jkhfz Hue系列产品将具备高度的个性化定制能力,并且借助内置红、蓝、绿三原色LED的灯泡,能够混合生成1600万种不同色彩的灯光。 整个操作流程完全由安装于iPhone上的应用程序进行管理。 这一创新举措为智能照明控制领域带来了新的启示,国内相关领域的从业者也积极投身于相关研究。 鉴于Hue产品采用WiFi无线连接方式,而国内WiFi网络尚未全面覆盖,本研究选择应用更为普及的蓝牙技术,通过手机蓝牙与单片机进行数据交互,进而产生可调节占空比的PWM信号,以此来控制LED驱动电路,实现LED的调光功能以及DIY调色方案。 本文重点阐述了一种基于手机蓝牙通信的LED灯设计方案,该方案受到飞利浦Hue智能灯泡的启发,但考虑到国内WiFi网络的覆盖限制,故而选用更为通用的蓝牙技术。 以下为相关技术细节的详尽介绍:1. **智能照明控制系统**:智能照明控制系统允许用户借助手机应用程序实现远程控制照明设备,提供个性化的调光及色彩调整功能。 飞利浦Hue作为行业领先者,通过红、蓝、绿三原色LED的混合,能够呈现1600万种颜色,实现了全面的定制化体验。 2. **蓝牙通信技术**:蓝牙技术是一种低成本、短距离的无线传输方案,工作于2.4GHz ISM频段,具备即插即用和强抗干扰能力。 蓝牙协议栈由硬件层和软件层构成,提供通用访问Profile、服务发现应用Profile以及串口Profiles等丰富功能,确保不同设备间的良好互操作性。 3. **脉冲宽度调制调光**:脉冲宽度调制(PWM)是一种高效能的调光方式,通过调节脉冲宽度来控制LED的亮度。 当PWM频率超过200Hz时,人眼无法察觉明显的闪烁现象。 占空比指的...
这句话是在Java中使用的增强型for循环(也称为foreach循环)语法的一部分,用于遍历集合、数组等可迭代的对象。在这个具体的例子中: ```java for (JjsSubject subjectItem : subjects) ``` 这一行表示的是“对于`subjects`集合中的每一个元素,都将它赋值给名为`subjectItem`的临时变量,并依次执行括号 `{}` 内部的代码块”。 具体来说,在这个上下文中: - `JjsSubject` 是一个类名,代表某种业务实体对象(例如药物研究的主题项目)。每个实例都对应着数据库中的一条记录。 - `subjectItem` 是一个局部变量名,它是每次迭代时指向当前正在处理的那个`JjsSubject`类型的对象。 - `subjects` 则是一个包含若干个`JjsSubject`对象的集合(通常为List或其他实现了Iterable接口的数据结构),由之前的查询语句获得。 因此,整个循环的作用是对`subjects`集合里的每一项逐一取出,并作为单个`JjsSubject`对象来操作。比如在你给出的例子中,就是针对每一条主题数据设置了审核人信息。 下面是一段示例代码说明如何使用这种语法: ```java // 假设我们有一个装满水果名字字符串的ArrayList List<String> fruits = Arrays.asList("苹果", "香蕉", "橙子"); // 使用增强for循环打印所有的水果名称 for (String fruitName : fruits) { System.out.println(fruitName); } // 对应到你的代码片段上则是这样的逻辑: for (JjsSubject subjectItem : subjects) { // 进行业务逻辑处理... if (subjectItem != null) { subjectItem.setLcs_fuhr(currentUserFrymc); // 设置复核人员字段 dao.attachDirty(subjectItem); // 标记对象需要持久化修改 } } ``` 通过这种方式编写代码可以使程序更为简洁易懂,并减少了传统索引式for循环所需的额外计数器管理等问题。
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