The writer's attitude towards laughter is
A.critical.
B.doubtful,
C.positive.
D.negative.
The cues that trigger laughter have been studied by scientists.
A.Y
B.N
C.NG
The purpose of two questions in the second paragraph is to ______.
A.demonstrate why people are amused
B.display what people laugh at
C.bring to light the phenomenon of laughter
D.accent what a phenomenon laughter really is
He burst into laughter, as though he had heard something funny.
A.as if
B.as well
C.so that
D.said
What didn\'t Mr. Cousins do in his experiments with laughter?
A.Watch funny TV shows.
B.Read funny books.
C.Take medicine.
D.Sleep whenever he felt tired.
The writer's attitude towards laughter is
A.critical.
B.doubtful.
C.positive.
D.negative.
A.take over
B.take in
C.burst into
D.burst from