阅读下列短文，从每题所给的 A、B、C 和D 四个选项中，选出最佳选项。
A
How to Write an Essay
College Writing 2.1x is an introduction to academic writing for English language learners, focusing on essay development, grammatical correctness, an self-editing. The course includes a review of basic grammar, and strategies for writing effective sentences and paragraphs, introductions and conclusions, longer texts, and topic sentences. Students will take part in online discussions and complete an essay for this part of the course .
Length: 5 weeks
Effort:5-6 hours per week
Instructor: Maggie Sokolik from the University of California Upper-Intermediate English: Technology Today
Take your English language skills to the next level. We will discuss technological advances as you improve your English vocabulary and grammar and learn how to write a business plan . The course includes video lessons, reading activities, grammar explanations and exercises, listening activities , and speaking practice.
Length:4 weeks
Effort:3-5 hours per week
Instructor: Derek Brown from the University of Washington Sign Language Science : Factors Contributing to Natural Change
In this course, we will explore how language changes over time. We know from documentation that early American Sign Language ( ASL ) does not look the same as it does today. That's because, as it was passed down , it developed and changed . In this course, we will look at the historical data and discuss how the language changed.
Length : 5 weeks
Effort:3-5 hours per week
Instructor: Ted Supalla from the Georgetown University Learn to Program in Java
Ready to start your programming journey? In this course, you'll learn not only how to code(编码） in Java but also how to break down problems and implement(实现）their solutions using some of the basic computer science tools.
Length : 4 weeks
Effort:8-10 hours per week
Instructor: Kasey Champion from the University of Washington
21.What do the first two courses have in common? A．Both last for one and a half months
B.Both are offered by the same university
C.Both require students to have discussions online.
D.Both include an explanation of grammatical rules.
22.Who will offer the course on the development of finger spelling? A．Ted Supalla. B．Derek Brown.
C．Maggie Sokolik. D．Kasey Champion. 23．What does the longest course focus on?
A．Testing English language skills. B．Giving tips on academic writing. C．Improving practical coding skills. D．Discussing Sign Language science.
21．D
22．A
23．C
【分析】
这是一篇应用文。文章介绍了四个免费的线上课程。
21．
推理判断题。根据“How to Write an Essay”所提到的课程内容“The course includes a review of basic grammar, and strategies for writing effective sentences and paragraphs, introductions and conclusions, longer texts, and topic sentences.”（该课程包括对基本语法的复习，以及编写有效句子和段落，引言和结论，较长文本和主题句子的策略。）和“Upper-Intermediate English: Technology Today”所提到的课程内容“The course includes video lessons, reading activities, grammar explanations and exercises, listening activities , and speaking practice.”
（该课程包括视频课程，阅读活动，语法解释和练习，听力活动和口语练习。）可知， 这两个课程的共同点都包括了对语法规则的解释。故选 D 项。
22．
细节理解题。根据文章“Sign Language Science : Factors Contributing to Natural Change”提到的课程内容“We know from documentation that early American Sign Language ( ASL ) does not look the same as it does today. That's because, as it was passed down , it developed
and changed . In this course, we will look at the historical data and discuss how the language changed.”（从文档中我们知道，早期的美国手语（ASL）看起来与今天不一样。 这是因为随着它的传承，它发展并发生了变化。 在本课程中，我们将查看历史数据并讨论语言的变化。）可知，来自乔治敦大学的 Ted Supalla 将传授有关美国手语的课程。故选A 项。
23．
细节理解题。根据题干提到的“最长课程”，我们可见答案定位于“Learn to Program in Java”。本课程时长 4 周，每周 8 到 10 个小时。根据“Learn to Program in Java”的授课内容 “Ready to start your programming journey? In this course, you'll learn not only how to code( 编 码 ） in Java but also how to break down problems and implement( 实 现 ）their solutions using some of the basic computer science tools.”（准备开始您的编程旅程了吗？ 在本课程中，您不仅将学习如何用 Java 编写代码，还将学习如何使用一些基本的计算机科学工具来解决问题并实现解决方案。）可知，本课程主要关注提高实用的编码技巧。故选C 项。
A
How to Write an Essay
College Writing 2.1x is an introduction to academic writing for English language learners, focusing on essay development, grammatical correctness, an self-editing. The course includes a review of basic grammar, and strategies for writing effective sentences and paragraphs, introductions and conclusions, longer texts, and topic sentences. Students will take part in online discussions and complete an essay for this part of the course .
Length: 5 weeks
Effort:5-6 hours per week
Instructor: Maggie Sokolik from the University of California Upper-Intermediate English: Technology Today
Take your English language skills to the next level. We will discuss technological advances as you improve your English vocabulary and grammar and learn how to write a business plan . The course includes video lessons, reading activities, grammar explanations and exercises, listening activities , and speaking practice.
Length:4 weeks
Effort:3-5 hours per week
Instructor: Derek Brown from the University of Washington Sign Language Science : Factors Contributing to Natural Change
In this course, we will explore how language changes over time. We know from documentation that early American Sign Language ( ASL ) does not look the same as it does today. That's because, as it was passed down , it developed and changed . In this course, we will look at the historical data and discuss how the language changed.
Length : 5 weeks
Effort:3-5 hours per week
Instructor: Ted Supalla from the Georgetown University Learn to Program in Java
Ready to start your programming journey? In this course, you'll learn not only how to code(编码） in Java but also how to break down problems and implement(实现）their solutions using some of the basic computer science tools.
Length : 4 weeks
Effort:8-10 hours per week
Instructor: Kasey Champion from the University of Washington
21.What do the first two courses have in common? A．Both last for one and a half months
B.Both are offered by the same university
C.Both require students to have discussions online.
D.Both include an explanation of grammatical rules.
22.Who will offer the course on the development of finger spelling? A．Ted Supalla. B．Derek Brown.
C．Maggie Sokolik. D．Kasey Champion. 23．What does the longest course focus on?
A．Testing English language skills. B．Giving tips on academic writing. C．Improving practical coding skills. D．Discussing Sign Language science.
21．D
22．A
23．C
【分析】
这是一篇应用文。文章介绍了四个免费的线上课程。
21．
推理判断题。根据“How to Write an Essay”所提到的课程内容“The course includes a review of basic grammar, and strategies for writing effective sentences and paragraphs, introductions and conclusions, longer texts, and topic sentences.”（该课程包括对基本语法的复习，以及编写有效句子和段落，引言和结论，较长文本和主题句子的策略。）和“Upper-Intermediate English: Technology Today”所提到的课程内容“The course includes video lessons, reading activities, grammar explanations and exercises, listening activities , and speaking practice.”
（该课程包括视频课程，阅读活动，语法解释和练习，听力活动和口语练习。）可知， 这两个课程的共同点都包括了对语法规则的解释。故选 D 项。
22．
细节理解题。根据文章“Sign Language Science : Factors Contributing to Natural Change”提到的课程内容“We know from documentation that early American Sign Language ( ASL ) does not look the same as it does today. That's because, as it was passed down , it developed
and changed . In this course, we will look at the historical data and discuss how the language changed.”（从文档中我们知道，早期的美国手语（ASL）看起来与今天不一样。 这是因为随着它的传承，它发展并发生了变化。 在本课程中，我们将查看历史数据并讨论语言的变化。）可知，来自乔治敦大学的 Ted Supalla 将传授有关美国手语的课程。故选A 项。
23．
细节理解题。根据题干提到的“最长课程”，我们可见答案定位于“Learn to Program in Java”。本课程时长 4 周，每周 8 到 10 个小时。根据“Learn to Program in Java”的授课内容 “Ready to start your programming journey? In this course, you'll learn not only how to code( 编 码 ） in Java but also how to break down problems and implement( 实 现 ）their solutions using some of the basic computer science tools.”（准备开始您的编程旅程了吗？ 在本课程中，您不仅将学习如何用 Java 编写代码，还将学习如何使用一些基本的计算机科学工具来解决问题并实现解决方案。）可知，本课程主要关注提高实用的编码技巧。故选C 项。
