54. What was used in the experiment to cause coughing?
(A) Theobromine.
(B) Codeine.
(C) Capsaicin.
(D) Placebo.

答案：登入後查看
統計： 尚無統計資料

詳解 (共 1 筆)

#1204312
A、B、D三项中的物品是用来做实验的物品。在文章第四段最后一句The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicine are stopping coughs.可知Capsaicin（辣椒素）用来引起咳嗽和作为这些药物如何止咳的依据。
0
0