Questions 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.
What is involved in many of the questions on video that are sent in through You Tube

A．Only a small part of the twelfth-graders have a basic level of understanding of economics.
B．The students did better in the economics test than in history or science.
C．The tests were given to the university students.
D．47 percent of the high school graduates had taken an economics class.

A．Comprising.
B．Concerned.
C．Aggressive.
D．Sarcastic.