单项选择题

A．hand collecting
B．using bait
C．sampling ground litter
D．using a pitfall trap

Separate containers are used for individual specimens.
<上一题 目录 下一题>
热门 试题

填空题
（40）处填入（）
单项选择题
Little time and effort is required.
Little time and effort is required.
相关试题