这题为什么选B 不选A？

discard2

Nuclear fusion is the force that powers the sun , the stars and hydrogen bombs, (merging the nuclei of atoms rather than splitting them apart , as  nuclear reactors do.)
A.merging the nuclei of atoms rather than splitting them apart , as  nuclear reactors do
B.and merges the nuclei of atoms , unlike nuclear reactors that split them apart.

这题为什么选B 不选A？

thanks

pgclt

my understanding: two forms of -ing are normally used, 1) accompaning result. 2)accompaning action (the subject has to agree with the subject of sentence.).
This sentence matches case 2), but the -ing subject is force, not Nuclear fusion.  and "as nuclear reactors do" also seems strange.

raonx

B is also wrong. the correct answer is E. after you read E you can find the difference between them.

raonx

对不起! 我昏了! B is correct.

discard2

pgclt,thank you la.

primefang

insightful thinking of  the friend from Netherlands

pgclt

primefang, who is from Netherland, me?  I guess the ip somehow messed up. I am at the frontline fighting against ets...

primefang

oh, anyway, Netherlands is a good place to travel. Do u mean you are near the ETS headquarter or in States? i may mess up again

cheers