语法问题~~求大NN解答哇

yeah529

1.       Despite no proof that theconsumption of any particular foods reverse hardening of the arteries, studiesindicate that refraining from eating certain foods could help reverse blockage of coronary arteries, the blood vessels thatfeed the heart.
(A) Despite noproof that the consumption of any particular foods reverse hardening of thearteries, studies indicate that refraining from eating certain foods could
(B) Despite nofoods having been proved to reverse hardening of the arteries when consumed,studies indicate that refraining from eating certain foods can
(C) Although theconsumption of no particular foods have been proved to reverse hardening of thearteries, studies indicate that to refrain from eating certain foods could
(D) Although notproved that the consumption of any foods reverse hardening of the arteries,studies indicate that refraining from eating certain foods can（E）
(E) Although ithas not been proved that the consumption of any particular food will reversehardening of the arteries, studies indicate that refraining from eating certainfoods can
答案是E，我选了D。我想知道D错在哪里呢。。


2.    Dr. Hegsted argues that justas polio vaccine is given to every person to protect the few who might actuallycontract polio, mass dietary change is needed to protect the significantnumber who are susceptible to the life-threatening effects of press eatinghabits.
(A) just as poliovaccine is given to every person to protect the few who might actually contractpolio
(B)like polio vaccine, which is given to every person toprotect the few who might contract polio
(C) similar topolio vaccine which is given to every person in order to protect the few whomight actually contract polio
(D) while, toprotect the few who might actually contract polio, polio vaccine is given toevery person（A）
(E) similar to thegiving of polio vaccine to every person in order to protect the few who mightcontract polio actually
答案是A。。
3.     Dr. Sayre’s lecture recountedseveral little-known episodes in the relations between nations thatillustrates what is wrong with alliances and treaties that do not havepopular support.
(A) relationsbetween nations that illustrates
(B) relation ofone nation with another that illustrates
(C)relations between nations that illustrate
(D) relation ofone nation with another and illustrate（B）
(E) relations ofnations that illustrates

答案选B。我选了C。。同求解释啊。。。