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【简答题】
蛋白质分离分析技术常用的有哪几种，简述凝胶过滤、电泳基本原理。
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举一反三
【单选题】It is believed lifelong learning is a crucial response to the challenge of the global ________ economy.
A.
technology
B.
knowledge
C.
examination
【单选题】听力原文：Banks are crucial to a country's economy, they serve as the center point of the exchange of money throughout the economy. (10)
A.
Cash is crucial to a country's economy.
B.
Money is crucial to a country's economy.
C.
Capital is crucial to a country's economy.
D.
Banks are crucial to a country's economy.
【简答题】According to Audiolingnalism, there are three crucial elements in learning: a stimulus, a response and______.
【单选题】Do you liker this one or that one? 此句 or 之前的this one 和之后的 that one, 调式组合是怎样的?
A.
降、升
B.
升、升
C.
升、降
D.
降、降
【简答题】A.necessary B.enormous C.essential D.crucial
【简答题】The crucial time is drawing neraly.
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