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| Instructions: Fill in the blank from the list of nouns. |
| 1. | In class, we studied about ________________. |
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| 2. | Scientists work in a __________________. |
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| 3. | Scientists often use ________________ to see things. |
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| 4. | Some scientists work on curing _______________. |
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| 5. | Other scientists work on finding the ___________ of man. |
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