在调查一块方圆2hm²的农田中田鼠的数量时，放置150个捕鼠笼，一夜间捕获了54只，将捕获的田鼠经标记后在原地释放。数日后，在同一地点再放置同样数量的捕鼠笼，捕获了48只，其中有上次标记的个体18只，则该农田中田鼠的种群数量最接近[     ]

A．54只

B．48只

C．120只

D．144只

5. He said he had stolen the money but he couldn’t ______ the fact that the money was found in his house.

A．answer for

B．leave for

C．account for

D．care for