4. What does the passage say about the pregnancy and birth in
2023-12-01英语B-4听力
4. What does the passage say about the pregnancy and birth in cat cloning?
A.A. One pregnancy results in one birth.
B.B. One pregnancy results in two births.
C.C. Two pregnancies result in one birth.
D.D. Two pregnancies result in two births.
正确答案是C
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