A-A+
39 According to Plumptre the region over whic
问题详情
39 According to Plumptre, the region over which a dung-pile census is carried out should be
A．small enough.
B．well protected
C．carefully monitored
D．large enough.
参考答案
正确答案：D
解析：倒数第二段提到了普伦特里的观点，即普查的地区应该大到不能使象自由出入，也就是说，必须足够大。A说的是：足够小；B说的是：得到了很好的保护；C说的是：得到了密切的监控，故选D。
