单选题 Questions 20 to 22 are based on the passage you have just heard.
【正确答案】 B
【答案解析】[听力原文]
The voice heard in the video belongs to mathematics teacher Jake Scott. Most of the performers are his students. Watching videos is not part of their daily routine but it is one of the essential course materials in Scott"s classes at Montgomery Blair High School in a Washington suburb.
"I use rap because it is something that appeals to the students, also because music aids with memory," Scott explains. "So, if I can come up with rap and organize it and present it to the students, then that"s helping the students to memorize it."
Scott started using rap videos three years ago. So far he has produced nine, including YouTube favorites "Triangle Experts" and "Quadratic Formulatic," which have been viewed tens of thousands of times. "It is fun and the whole process is something that students appreciate," Scott says.
In recent years, Scott has made a special effort to help students from other countries. "When they come here, their language skills are not up to par. So they are often times placed on a remedial level which is very low. Some of the students get discouraged and drop out," he states. "So I decide to focus on this group of students because many of those students are very capable."
Scott was recognized as an outstanding educator last year by the Montgomery County Council. He was also honored as 2011 teacher of the year by an African-American civil rights organization. Jake Scott says he wants mathematics to be something that students look forward to learning. And he says the results will help them on a path to college and a career.

What does Jake Scott do to make mathematics fun?

[解析] 本题问的是“杰克·斯科特做了什么事情来让数学变得有趣”,短文中提到观看视频已成为杰克·斯科特的主要课堂材料。此外,文中还提到他使用说唱视频来教学是因为这能吸引学生。因此,B选项“杰克·斯科特使用说唱视频来教授数学”为正确答案。
【正确答案】 C
【答案解析】[听力原文]
Why did Jake Scott make a special effort to help overseas students?

[解析] 本题问杰克·斯科特为什么特别努力地帮助留学生。短文中提到,许多留学生由于语言不过关,所以需要花费很多时间补习。一些学生因此灰心丧气甚至辍学,但是事实上这些学生中有很多都是很有潜力的。C选项所述内容与短文内容一致,故选C。
【正确答案】 B
【答案解析】[听力原文]
What"s the dream of Jake Scott?

[解析] 短文最后提到,杰克·斯科特于2011年被评为杰出教育者,他希望数学能成为学生盼望学习的东西,而其结果是帮助学生进入大学并找到工作。因此,B选项“杰克·斯科特想让数学成为学生喜欢学习的课程”为正确答案。