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【简答题】
质子理论认为酸碱反应的实质是在酸碱之间发生了________。具有共轭关系的酸碱对中，酸强，其共轭碱就________。
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反馈参考答案：
举一反三
【单选题】What will the man do this afternoon?
A.
He has an important meeting.
B.
He has a lunch appointment.
C.
He will check his schedule for openings.
D.
He will write a report.
【单选题】What does the woman tell the man?
A.
He has to do what is necessary in order to learn.
B.
He doesn't have to memorize all the vocabulary.
C.
There is not much he can learn by memorizing.
【简答题】A．No, he is not allowed to change his mind. B．Yes, he has the legal right to do so. C．No, because he has already displayed the goods. D．Yes, if the customer allows him to do so.
【单选题】导致先天性心脏病最重要的环境因 素是
A.
孕早期服用叶酸 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
孕早期接种风疹疫苗 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
孕中期感冒 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
孕早期宫内感染 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
E.
孕中期接触宠物
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