【单选题】The air and rivers in this area are getting cleaner, and attempts to preserve animal species and their ____________ have been mainly successful. A、 habitat B、 habitats C、 habitant D、 habitants

【单选题】The air and rivers in this area are getting cleaner, and attempts to preserve animal species and their ____________ have been mainly successful.
A、
habitat

B、
habitats

C、
habitant

D、
habitants

出自：河北农业大学大学英语Ⅳ

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