【单选题】On the one hand,we should make efforts to improve the economy;on the other hand,we must keep a balance between______development and environment protection.
【简答题】On the one hand, we should make efforts to improve the economy; on the other hand, we must keep a balance between ________ development and environmental protection.
【简答题】Translte the sentence into Chinese: On the one hand I agree with you but on the other hand, we shouldn't forget that productivity costs are not always lower in the long run.
【单选题】On the one hand, we should make efforts to improve economy; on the other hand, we must keep a balance between ______ development and environmental development.