Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Z...
2023-02-08 22:48:08 113次 0910学年广东省高一第一学期期末考试 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Pine trees, of
which there are almost one hundred _____, are found throughout the North
Temperate Zone.
A.
species B.
samples C.
specimens D. Standards
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