标题: GWD-23-Q31 [打印本页] 作者: xingxc11 时间: 2011-7-21 00:32 标题: GWD-23-Q31 According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.
A. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems B. threat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems C. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems D. threat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss E. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat 为何不选E，此题从哪里入手？？望各位大牛指点作者: dreamflyhigh 时间: 2011-7-21 00:38
这题是选A么作者: dreamflyhigh 时间: 2011-7-21 00:42
不是大牛哈。这题主要考“平行”~invasive plants 和habitat loss平行，都为名词性短语。（排除lossing）to native species of plants and animals 和 to the maintenance of biologically diverse ecosystems平行~，都是To +n.的形式(排除maintaining)...