【多选题】【消耗次数：1】
森林按起源分为哪三类？
①
次生林
②
人工林
③
原始林
④
用材林
参考答案：
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相关题目
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22.96%
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not be absent
②
not to absent
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not to be absent
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not absenting
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healthy
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available
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profitable
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laid out
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laid up
③
laid by
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laid down
【单选题】
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living
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live
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lovely
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alive
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consumption
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use
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drink
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absorption
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①
was sentenced , death
②
sentencing , die
③
sentenced , death
④
sentenced , die
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①
So fast he ran
②
So fast did he run
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So fast ran he
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excessively
②
much
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certainly
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exceedingly
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①
explanation
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meaning
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sense
④
interpretation