作者：英吉
The federal rules aimed at protecting human subjects of medical experiments were established to ensure that patients must be warned of potential risks and an independent panel would evaluate the experiment before it was conducted.
(A) must be warned of potential risks and an independent panel would
(B) must be warned of potential risks and that an independent panel
(C) are warned about potential risks and that an independent panel
(D) will be warned about potential risks and an independent panel would
(E) would be warned of potential risks and that an independent panel would
原文意思：一个法规目的是确保病人必须被告知试验存在的潜在风险并且确保panel将会评估试验
题目分析：原文有一个并列，就是法规必须确保第一个事情和第二个事情。and前后只有E并列。A前面用must后面用would而且后面没有that，B前面用must后面什么都没有。C前面用are后面什么都没有，D前面用will后面用would，而且没有that，E前后都有that，并且都有would，符合一致！
