[解析]
(1)D.主旨大意题。根据文章第一段第二句"Bilbies are known for their long ears and large back legs.They usually sleep during the day,and are awake at night.They look a lot like rabbits and grow to about 2.5 kilograms.Bilbies以其长耳朵和大后腿而闻名。他们通常白天睡觉,晚上醒着。它们看起来很像兔子,长到2.5公斤左右。"介绍了兔耳袋狸的体型,体重和生活习惯,这些都是兔耳袋狸的特征。因此第一段的主旨大意是介绍兔耳袋狸的特征,故选D.
(2)A.细节理解题。根据文章第二段最后一、二句"Wildlife experts are afraid that the bilby,a small marsupial,could eventually disappear forever,either because of land clearing or fires.Another reason is a threat from cats and foxes,which hunt down and kill bilbies.野生动物专家担心,无论是因为土地清理还是火灾,这种小型有袋动物最终都可能永远消失。另一个原因是猫和狐狸的威胁,它们猎杀bilbies."可知兔耳袋狸消失的原因有土地清理或火灾,和来自猫和狐狸的捕食,没有提及A选项"树木清理",故选A.
(3)B.词义猜测题。根据文章第三段后文Without the protection of a 32﹣kilometer fence,experts say the animals probably would not survive.如果没有32公里长的围栏的保护,这些动物可能无法生存。故可推测上文兔耳袋狸应当是被放入一个大型"保护"区域当中,故可推测划线部分单词意思为"保护的",A.Involved参与其中;B.Protected受保护;C.Hunted被猎杀;D.Enlarged 放大了。故选B.
(4)C.推理判断题。根据文章最后一段Allard的话提到"Bilbies only really survive behind fenced areas."可知Allard提到兔耳袋狸只能在围栏里生存,也就是说要保护兔耳袋狸,建立大自然保护区是必要的。故选C.