大全 391

Snazzy

391.    In large doses, analgesics that work in the brain as antagonists to certain chemicals have caused psychological disturbances in patients, which may limit their potential to relieve severe pain.
(A) which may limit their potential to relieve
(B) which may limit their potential for relieving
(C) which may limit such analgesics’ potential to relieve
(D) an effect that may limit their potential to relieve
(E) an effect that may limit the potential of such analgesics for relieving

Isn't D better than E?

thornbirdcfa

in D "their" is unclear and can refer to both patients and analgesics. That's why E particularly use the phrase-- such analgesics-- to make it clear.

Snazzy

thanks, i always forget it.