10岁小科学家与蝴蝶的记忆秘密（语法填空）
10岁小科学家与蝴蝶的记忆秘密（语法填空）

At the age of 10, Jo Nagai did an experiment that surprised scientists all over the world. He raised and trained swallowtail caterpillars (燕尾蝶幼虫) at home, and he ___1___ (prove) that butterflies can keep the memories they formed when they were caterpillars, even after they change ___2___ (complete) into butterflies.

The change from a caterpillar to a butterfly is called metamorphosis (变形). It is one of the most amazing ___3___ (change) in nature. Inside the chrysalis (蛹), a caterpillar almost melts and builds itself again, ___4___ (become) a totally different creature. People always thought that all memories would ___5___ (lose) during this process, but Jo’s experiment showed a different result.

In his experiment, Jo trained the caterpillars to connect a special smell with an ___6___ (pleasant) experience. Later, after the caterpillars turned into butterflies, he tested if they still reacted ___7___ that smell. Surprisingly, many butterflies avoided it. This showed that memories from the caterpillar stage can stay ___8___ they become butterflies.

Jo didn’t stop there. He did the experiment again and tested the ___9___ (two) generation of butterflies. He wanted to see if they also avoided the smell their parents hated. A few ___10___ (month) later, he found that these young butterflies also kept the memory and avoided the smell. This finding tells us that some life experiences can influence the next generation.
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1.1.

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解析：选proved。proved 考查动词。根据前文的did可知，句子时态为一般过去时，此处应用prove的过去式。故填proved。

2.2.

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解析：选completely。completely 考查副词。此处修饰动词change，应用complete的副词形式，作状语。故填completely。

3.3.

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解析：选changes。changes 考查名词复数。根据前文的one of+形容词最高级形式可知，此处应填可数名词的复数形式。故填changes。

4.4.

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解析：选becoming。becoming 考查非谓语。句子已有谓语动词melts和builds，此处应用非谓语动词，主语a caterpillar与become之间是主动关系，表示结果，用现在分词形式。故填becoming。

5.5.

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解析：选be lost。be lost 考查被动语态。主语all memories与lose之间是被动关系，且would后接动词原形，应用被动语态be lost。故填be lost。

6.6.

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解析：选unpleasant。unpleasant 考查形容词。根据后文“many butterflies avoided it”可知，此处指“不愉快的经历”，应用pleasant的反义词unpleasant。故填unpleasant。

7.7.

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解析：选to。to 考查介词。react to是固定短语，意为“对……做出反应”，此处指对那种气味做出反应。故填to。

8.8.

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解析：选after。after 考查连词。根据句意“这表明毛毛虫时期的记忆在它们变成蝴蝶后依然能保留下来”，此处表示“在……之后”，应用连词after。故填after。

9.9.

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解析：选second。second 考查序数词。根据句意“测试了第二代蝴蝶”，此处应用two的序数词形式second，修饰名词generation。故填second。

10.10.

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解析：选months。months 考查名词复数。根据前文的a few可知，此处应用month的复数形式，a few months later意为“几个月后”。故填months。