1.  Why does the student say this?
A    Because the previous answers are totally wrong.
B    Because the previous answers cannot be happening in the 21st
 century.
C    Because the previous answers are old-fashioned methods.
D    Because the previous answers do reflect the new technology.
(C)
2. Why does the student say “again”?
A    He wants  the  professor  to  explain  how  the  researchers  can make  such  conclusions  one more
time.
B    He notices that once again the professor made a mistake in explaining.
C    He still does not fully understand what the professor means.
D    He wants the professor to show him the pictures used in the research once again.

(D)
3. What can be inferred about the students?
A    They fully understand the lecture.
B    They do not like the scientific findings in the lecture.
C    They have an opposing view to each other.
D    They still don’t understand the lecture.