请教NN OG中两道有关as&like题

1:More than thirty years ago Dr. Barbara McClintock, the Nobel Prize winner, reported that genes can "jump",(as pearls moving mysteriously from one necklace to another.)

B:like pearls moving mysteriously from one necklace to another

C:as pearls do that move mysteriously from one necklace to others

D:like pearls do that move mysteriously from one necklace to others

E:as do pearls that move mysteriously from one necklace to some other one

og 解释：b,usues the prepostion like to introduce a comparison that is expressed in a prepositional prhase.

2uring an ice age, the buildup of ice at the poles and the drop in water levels near the equator speed up the Earth's rotation, (like spinning figure skater whose speed increases when her arms are drawn in.)

B: like the increased speed of a figure skater when her arms are drawn in

C:like a figure skater who increases speed while spinning with her arms drawn in

D:just as a spinning figure skater who increasds speed by drawing in her arms

E:just as a spinning figure skater increases speed by drawing in her arms

通过这两题能给一个具体的关于as like 的区别吗？多谢多谢啦。