题干
The ______ of living areas makes wild animals become fewer than before.
A：loss
B：lost
C：losing
D：lose
答案(点此获取答案解析）
A
The ______ of living areas makes wild animals become fewer than before.
A：loss
B：lost
C：losing
D：lose
，另两边长是方程 
的两实根，则这是一个（ ）.