Level A1 :
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RANDOM
Level A2 :
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Level B1 A:
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Level B1 B:
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| (IELTS4000) kernel | Definition: central or vital part; most material and central part; grain or seed as of corn |
| (SAT5000) kernel | Definition: A grain or seed. |
| HSK5000 A1+A2+B1 |
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| HSK5000 B2 + C1 |
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