2. 外语
  3. One of the basic principles of wildlife conservation involves ______ adequate natural food and shelter to maintain populations o

One of the basic principles of wildlife conservation involves ______ adequate natural food and shelter to maintain populations o

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问题 One of the basic principles of wildlife conservation involves ______ adequate natural food and shelter to maintain populations of each species in a given habitat.
选项 A、the provision
B、that provision
C、to provide
D、providing
答案B
解析
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