163. Found throughout Central and South America, sloths hang from trees by long rubbery limbs and sleep fifteen hours a day, moving infrequently enough that two species of algae grow on its coat and between its toes.
- sloths hang from trees by long rubbery limbs and sleep fifteen hours a day, moving infrequently enough
- sloths hang from trees by long rubbery limbs, they sleep fifteen hours a day, and with such infrequent movements
- sloths use their long rubbery limbs to hang from trees, sleep fifteen hours a day, and move so infrequently
- the sloth hangs from trees by its long rubbery limbs, sleeping fifteen hours a day and moving so infrequently
- the sloth hangs from trees by its long rubbery limbs, sleeps fifteen hours a day, and it moves infrequently enough
D, the best choice, correctly subordinates sleeping and moving to hangs while using the idiomatically correct phrasing so (infrequently) that.... The pronoun its shows clearly that the limbs belong to the sloth, not the trees. Choice A illogically coordinates hang and sleep and, like E, uses the unidiomatic expression infrequently enough that. B creates an awkward and nonparallel series: sloths hang ..., they sleep ..., and with.... C creates a confusing and absurd image with use their... limbs to hang ..., sleep ..., and move .... A, B, and C all mistakenly use the plural sloths, which does not agree , with its coat and... its toes. E wrongly coordinates hangs and sleeps and violates parallelism by inserting it before moves to create a new independent clause.
请教E选项中的请教sleeping....and moving...做什么成份?为什么可以这么用?前人回答说是作为伴随状语或结果壮语修饰全句或动词hang。不过本人实在看不出sleeping....and moving...怎么修饰hang或作hang的伴随状态。我认为逻辑上hang就应该和sleep平行,而moving作为sleep的伴随壮语。所以相比之下A更合逻辑。OG所说的A缺少its的问题再逻辑上显得并不严重。
请nn指点
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