题目内容
20
A. They behave like other animals in many ways.
B. They have an unusual sense of responsibility.
C. They can respond to humans’ questions.
D. They can fall in love just like humans.
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21
A. They stay with one partner for life.
B. They have their own joys and sorrows.
C. They experience true romantic love.
D. They help humans in various ways.
24
A. The channel needs to interview the boy.
B. The boy should have called an expert.
C. The boy's family had acted correctly.
D. The site should have been protected.