单项选择题

The vireo’s comeback may prove that habitat along streams in Southern California is recovering from the effects of pollution,（）indicator of environmental health in a state that has lost most of its（）woodlands.

A．a leading ； superfluous
B．an apocryphal ； ecological
C．a partial ； surfeit
D．a telling ；riparian
E．an anecdotal ； arboreal

<上一题目录下一题>

热门试题

单项选择题

A gulf remains between negotiators from the rich world, who are so skeptical they hope to see the treaty’s ambitious provisions（）, and those from poor countries, who want them（）.

A．explicated ；ignored
B．diluted ； strengthened
C．absconded ； delivered
D．reinforced ； removed
E．relaxed ； loosened

单项选择题

Science and society are（）collaborators: In the best of worlds we may achieve a very fine and finely negotiated partnership, and in the worst of worlds,（）one by the other.

A．symbiotic ； destruction of
B．antagonistic ； amelioration of
C．trustworthy ； exploitation of
D．uneasy ； annihilation of
E．parasitic ； indifference to