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【多选题】
兴奋性突触的传递过程，包括以下步骤A.
突触前轴突末梢去极化
B.
Ca2+由膜外进入突触前膜内
C.
突触小泡释放递质，并与突触后膜受体结合
D.
突触后膜对Na+，K+，特别是对Na+通透性增高
E.
突触后膜电位去极化达到阈值时，在突触后膜上引起动作电位
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【单选题】Which of the following about marriage is NOT mentioned in the passage? ______
A.
It is important to discover what makes a marriage successful.
B.
Marriage has long been partly an economic need.
C.
It is a fact that most people choose to get married.
D.
Many people went abroad after divorce.
【简答题】adv. in a way that appears to be true but may in fact not be
【简答题】adv. in a way that is the opposite of sth.
【单选题】If you want to persuade a skeptical audience, which of the following is the most important for you to do in your speech?
A.
Define unclear terms in the introduction
B.
Focus the speech on questions of value
C.
Answer the reasons for the audience's skepticism
D.
Include a call for action in the conclusion
【简答题】adv. with a lot of force; in a way that is difficult to control
【简答题】adv. in a way that is opposite to sth.
【单选题】According to the passage, which of the following is NOT true?
A.
Social values play an important role in social change.
B.
Social change is more likely to occur in the material aspects of society.
C.
Social change is more likely to occur if it comes gradually.
D.
Social change tends to meet with more difficulty in basic and emotional aspects of society.
【单选题】The practice of doctors is mentioned to show that______.
A.
medical competence is more important than medical ethics
B.
medical ethics precedes intellectual level
C.
empathetic behavior. can supplement medical skills
D.
doctors' listening can help relieve patients' pain
【单选题】Which of the following is NOT true according to the passage?
A.
Invisible trade is not important.
B.
Developed countries enjoy favorable conditions in foreign trade.
C.
Goods from developed countries fetch higher prices in international markets.
D.
Columbia and Brazil have just the right climate for growing coffee.
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