OG-12th-124

124. Found throughout Central and South America,
sloths hang from trees by long rubbery limbs and
sleep 15 hours a day, moving infrequently enough
that two species of algae grow on its coat and
between its toes.
(A) sloths hang from trees by long rubbery limbs and
sleep 15 hours a day, moving infrequently enough
(B) sloths hang from trees by long rubbery limbs,
they sleep 15 hours a day, and with such
infrequent movements
(C) sloths use their long rubbery limbs to hang from
trees, sleep 15 hours a day, and move so
infrequently
(D) the sloth hangs from trees by its long rubbery
limbs, sleeping 15 hours a day and moving so
infrequently
(E) the sloth hangs from trees by its long rubbery
limbs, sleeps 15 hours a day, and it moves
infrequently enough

答案D，想问一下，如果把C改成sloth uses their long .....to hang from trees, sleep 15 hours a day, and move so infrequently.是不是一种多项的并列平行呢？而且因为sleep前面把to省略了，所以后面move前面的to也省略了，不知道对不对~
谢谢各位了~~