问题
选择题
With more and more forests _____, many animals are facing the danger of dying out. [ ]
A. to destroy
B. destroying
C. destroyed
D. to be destroyed
答案
答案：C
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With more and more forests _____, many animals are facing the danger of dying out. [ ]
A. to destroy
B. destroying
C. destroyed
D. to be destroyed
答案：C
和颌的正常生长发育
表示，则该对象的放大系数为（）。