The bargain they reached with their employers was to reduce their wage demand and accept a shorter

working week______.[ ]

A. in return

B. in all

C. in reality

D. in turn

云南省共有陆栖脊椎动物________种，占全国总数的57.3%，《国家重点保护野生动物》名录中的257个野生动物种，云南有_________种，占总数的__________%，其中一级保护野生动物有_________种，二级有__________种。