Questions 4 to 6 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now,listen to the passage.
4. How long does it take to cover the workbook material?
A. For more than a term.
B. For less than a semester.
C. For no more than a terra.
D. For no less than a year.
5. According to the passage, students would choose the experiments and activities_____.
A. under a set structure
B. in accordance with instructions
C. based on discussions
D. within some frameworks
6. Where can you find detailed procedures in the workbook?
A. In "Preface" section.
B. In "Directions" section.
C. In "Experiments" section.
D. In "Activities" section.