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Why Do Some Trees Lose Leaves in Autumn While Others Stay Green?
为什么有些树秋天落叶,而另一些树却四季常青?
精读先不看文字,完整听一遍。
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Deciduous trees drop leaves to save water during cold, dry winters.落叶树在寒冷干燥的冬季落叶以节约水分。
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Evergreen trees have thick, waxy leaves that resist drying out.常绿树叶片厚实、表面覆蜡,不易失水。
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Pine needles contain oils that prevent freezing damage.松针含有防冻油,可防止冻害。
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Both types make food using sunlight, but manage resources differently.两类树木都利用阳光制造养分,但资源管理方式不同。
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Leaf loss helps deciduous trees avoid branch breakage from snow.落叶有助于落叶树避免积雪压断枝条。
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Evergreens keep leaves for two to five years before replacing them.常绿树的叶子可保留两到五年才更新。
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Soil type and rainfall also shape which trees grow where.土壤类型和降水量也影响树木的分布。
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Nature chooses the best leaf strategy for each climate and soil.自然为每种气候和土壤选择最适宜的叶片策略。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Pine needles contain oils that prevent freezing damage. 松针含有防冻油,可防止冻害。
- Evergreen trees have thick, waxy leaves that resist drying out. 常绿树叶片厚实、表面覆蜡,不易失水。
- Both types make food using sunlight, but manage resources differently. 两类树木都利用阳光制造养分,但资源管理方式不同。
④ 懂 · 选一选
⑤ 今天会说这一句
Pine needles contain oils that prevent freezing damage.
⑥ 跟读并录音
Pine needles contain oils that prevent freezing damage.
第一版:录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达,自己说一句。
例子:Pine needles contain oils that prevent freezing damage.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中,敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课,可以去陈老师带读社(和自学通行不是同一份会员)。
课程开发中,敬请期待。