Wedonothaveadequate______fortheuseofanimals.
A.subsequents
B.substitutes
C.substances
D.substitutions
正确答案:B[解析]subsequents:后来的;substitutes:替补,代替;substance:本质;substitution:替换,代用。

Wedonothaveadequate______fortheuseofanimals.
A.subsequents
B.substitutes
C.substances
D.substitutions
正确答案:B