These scientists are interested in (find) ______ out how short-term memory becomes long-term memory.

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问题 These scientists are interested in (find) ______ out how short-term memory becomes long-term memory.

选项

答案finding

解析 本题考查介词后宾语的形式。介词in后应接名词或动词的-ing形式,因此,本题填写动词find的动名词形式finding。
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