66. According to the author, swans in captivity are ______.
A. happy unless their wings have been cut
B. happy most of the time, but unhappy sometimes
C. unhappy most of the time
D. only happy when they are bringing up families
67. What effect does confinement have on clever animals, according to the text?
A. They never stop trying to escape.
B. They lose all their muscles.
C. They become unhygienic.
D.They may go mad.
68. In Paragraph 3, the expression “have no compunction about” most probably means” have no _____.
A .reaction to
B. understanding of
C. second thoughts about
D. enlightenment on
69. What does the author say about sentimental old ladies?
A. They do not care about animals.
B. They hate making animals suffer.
C. They enjoy making animals suffer.
D. They do not realise the consequences.
70. What do you think “large corvines” probably are?
A. Another kind of bird.
B. Another kind of parrot.
C. Another kind of swans.
D. Other birds that convince us.
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