[解析]
(1)C.细节理解题.根据第一段中The rusty patched bumblebee (大黄蜂) is the first of its species to be declared endangered in the lower 48 states﹣meaning every state except Alaska and Hawaii.可知,有48个州宣布The rusty patched bumblebee濒临灭绝.故选C.
(2)D.推理判断题.根据第三段中The officials also suggest that gardeners leave their plants alone at the end of the summer instead of cutting them.That way,the bees will have a place to live over the winter.可知,定期剪植物对the rusty patched bumblebee是有害的.故选D.
(3)C.推理判断题.根据第三段中They say land owners can be friendlier towards bees by using native plants in their gardens.The insects directly fertilize many kinds of fruit and vegetable crops.And they fertilize grain crops used to feed cattle and milk cows.It costs billions of dollars to duplicate the job the bees do for free.可知,根据课文,我们能知道the rusty patched bumblebee对土地的主人是有益的.故选C.
(4)主旨大意题.根据最后一段第一句The Fish and Wildlife Service says the rusty patched bumblebee was added to the endangered species list partly because of habitat loss.可知大黄蜂加入了美国濒危物种名单.故选A.