Question
9 to 19 are based on this passage
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Question 9
Which question did Lind’s experiment NOT answer?
A. Will lemons cure scurvy?
B. Will either sulfuric acid or vinegar cure scurvy?
C. Will pure citric acid cure scurvy?
D. Are lemons more effective than either sulfuric acid or vinegar in the treatment of scurvy?
E. Are all substances that contain acids equally effective as treatments for scurvy?
我的答案： 无