It seems – nobody is sure of anything nowadays – that yawning was once
seen as a chance of evil spirits to enter the body while the soul slipped out. So, we
began covering themouth to frustrate the to-and-fro, but that hasn´t put a lid on
certain vital question such as: Who yawns?
Science replies: fish yawn on switching from one activity to another, chickens
stand ontiptoe, flap their wings – and yawn. With its head out of the sand, the South
African ostrich has been caught yawning. Dogs yawn like mad when they become
aggressive, unless – and this goes for cats andapes, too – they are signaling
Dr. Jacques Barbizet, of Saint Antoine Hospital, in Paris, studied yawning with
radiographs made every half second. He detected dilation ofpharynx, Larynx,
nostrils, and bronchial tubes; lifting of the eyebrows, lowering of the diaphragm;
retreat of the tongue; a slight racing of the heart; increased flow of the blood to the
brain;rhythmic lateral motions of the mandible; closure of the eyes; occasional tears
and saliva, as well as occasional dislocation of the jaw.
16ª QUESTÃO – Write ( T ) for True or ( F ) for False:
1.( )When cats yawn they are always signaling peaceful coexistence.
2.( ) Sometimes yawning may cause dislocation of the jaw.
3.( ) Dogs yawn only when they are aggressive.
4.( ) Yawning may change theflow of the blood to the brain.
5.( ) Dogs yawn when they are mad.
A. ( ) F, F, F, T, T.
B. ( ) T, T, F, F, F.
C. ( ) F, T, F, T, F.
D. ( ) T, F, F, F, F.
17ª QUESTÃO – Check only the movementsthat occur during yawning, according to the text.
1 - Lowering of the diaphragm.
2 - Dislocation of the jaw.
3 - Closure of the nostrils.
4 - Retreat of the eye.
5 - Dilation of the heart.
6 -Occasional tears and saliva.
A. ( ) 1, 2, 6.
B. ( ) 3, 4, 5.
C. ( ) 2, 4, 6.
D. ( ) 1, 3, 5.
18ª QUESTÃO – In this sentence “If they had paid attention, they _________ (learn)