问题:
[单选题]
What was the biggest change in the tortoises in Paragraph 6?
A.
They showed abnormal behaviors.
B.
They had serious liver problems.
C.
They lost their appetite for food.
D.
They had obviously lost weight.
试题来源参考:成人高考专升本,英语真题试卷,英语答案,英语历年真题,英语模拟试卷,成人高考专升本入学考试