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色甘酸钠的主要作用机制
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能刺激胃黏膜，反射性引起呼吸道腺体分泌增加而稀释痰液的药物是
下列药物中，属于痰液溶解药的是
The encouraging stories of both civilian and first-responder heroes show that “ordinary people can do ______1________ things, whether it is in the ______2______ of their duties or as part of everyday life”. We should honor those heroes by “recognizing their ____3_____” and, more importantly, by changing “the _______4_______ that led to their death”. By honoring these heroes, “we can be _____5____ by them”.
According to Paras 9-12, list the question, example and conclusion ,which the writer discussed.Question:___________________1____________________Example 1:__________________2____________________Example 2:__________________3____________________conclusion:__________________4____________________
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