A-A+
回答(47)题 查看材料A.But this advantage also has a bi
问题详情
回答(47)题 查看材料
A.But this advantage also has a big drawback——up to 10% of the biggest toads suffer from arthritis.
B.The task now facing the country is how to remove the toads.
C.But arthritis didn"t slow down toads outside the laboratory.
D.Toads with longer legs move faster and travel longer distances while the others are being left behind.
E.Toads are not built to be road runners——they are built to sit around ponds and wet areas.
F.Furthermore, they soon take over the natural habitats of Australia"s native species.请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:B
从原文来看,空白处前面一句讲的是蟾蜍现在已经蔓延到超过l00万平方公里的区域,说明蟾蜍开始泛滥,而空白处后一句说的是一种委内瑞拉病毒在90年代开始用来消灭蟾蜍,但之后发现它也杀本地的青蛙物种,于是就不得不放弃了,所以空格处应填入与消除蟾蜍有关的选项,故B(现在这个国家面临的任务就是如何消除蟾蜍)符合原文。