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题目内容
（河南科技大学大学英语3(专升本)）
Bears and wolves have the same colors as barks of trees because ______.
A:they fear other beasts
B:they prefer brown or grey colors
C:they enjoy walking through forests quietly
D:the colors help prevent themselves from being noticed
A:they fear other beasts
B:they prefer brown or grey colors
C:they enjoy walking through forests quietly
D:the colors help prevent themselves from being noticed
参考答案