10.One of the basic principles of wildlife conservation involves __ adequate natural food and shelter to maintain populations of each species in a given habitat.
% B1 c! h/ q6 L. V) [8 H8 Z(A)the provision
* T- q% F; t+ x, [" r(B)that provision
" t& ]' a9 H9 @/ a; l& ~0 l(C)to provide5 @! F4 N3 H% L
(D)providing
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我觉得不定式可以做宾语亚？搜索了，没找到，谢谢
答案d.
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本帖最后由 sdmmqy 于 2006-7-19 09:18 编辑 ]
