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题目内容
（乐山师范学院综合英语）
Cats sleep much more than horses do partly because cats ______.
A. need more time for restoration
B. are unlikely to be attackers
C. are more active than horses when they are awake
D. spend less time eating to get enough energy
A. need more time for restoration
B. are unlikely to be attackers
C. are more active than horses when they are awake
D. spend less time eating to get enough energy
参考答案