卵泡在发育过程中，卵巢可分泌雌激素和孕激素，以及少量的______。
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嗅觉感受器的适宜刺激是空气中含有气味的______。
醛固酮的分泌主要受______和血K+、血Na+浓度的调节。
胆汁的作用包括：______；促进脂肪和脂溶性维生素的吸收；中和胃酸及促进胆汁自身分泌。
Passage Three Questions 33 to 35 are based on the passage you have just heard.
A. Both Americans and immigrants are dissatisfied with the education quality.
B. The author probably was an immigrant from Asia.
C. Children in other countries are not likely to learn creative geography.
D. The example of the author’s son shows that American education is poor.
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