单项选择题

At a time when Internet use is expanding rapidly, social critics say the technology could______the fragmentation of U. S. society or help to fuse it, depending on how it is used.

(A) attenuate
(B) exacerbate
(C) simplify
(D) eradicate
(E) retard

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To survive, a non-human species must be too______to be ...

单项选择题To survive, a non-human species must be too______to be thoroughly captured, too ______to be noticed, or too immutable to be changed.

(A) resilient… aggressive
(B) diffuse … trivial
(C) intractable… conspicuous
(D) concentrated … camouflaged
(E) mercurial … minute

We ought not suppose that "social" and "governmental" a...

单项选择题We ought not suppose that "social" and "governmental" are______, for the differences in the two terms are both manifest and______.

(A) homonymous … established
(B) insidious… lucid
(C) antonymous … considerable
(D) synonymous… unique
(E) coterminous… evident

The passage is chiefly concerned with（） (A) offering an...

单项选择题The passage is chiefly concerned with（）

(A) offering an explanation of the process that causes a phenomenon, and a counter-explanation
(B) demonstrating how two processes act in symbiotic coordination in causing a phenomenon
(C) establishing how one process causes a phenomenon which is resisted by a second process
(D) explaining two separate processes which cause a mostly identical phenomenon
(E) outlining the essential differences between two distinct phenomenon that issue from a single cause