Ⅱ. 重要的植物
在了解了树木的重要性后，Daniel 打算在假期参与一项植树的志愿活动。(有一项多余)
A lot of health care is connected with being around trees. 1.
They also do a great deal of good for the environment by reducing air pollution and taking in carbon dioxide from the atmosphere. 2.
A tree's ability to take in carbon dioxide is especially useful when the tree is in cities or towns, where there are too many industrial activities. For the study, the researchers used laser scanning (扫描) methods to take their own carbon readings of trees from the ground as well as the air. 3.
They decided that Camden had a median carbon density (浓度) of around 55 tons of carbon per hectare (t/ha). Greener areas of the borough, like Highgate Cemetery, had a carbon density of 380 t/ha—levels that are typically seen in rainforests. 4.
So what exactly does this mean? Trees could help cool the atmosphere by removing carbon dioxide from the air. However, some climate scientists argue that it's more complicated (复杂的) than that. 5.
A. We need to protect the ones we already have.
B. These benefits aren't just felt in the countryside either.
C. For comparison, major cities in the USA have a carbon density of 7.7.
D. They have been known to reduce people's stress and improve overall mental (精神的) health.
E. Then they compared their findings with the data from the UK Environment Agency.
F. They think the impact (影响) of tree - planting activities today may not be seen for many years.
在了解了树木的重要性后，Daniel 打算在假期参与一项植树的志愿活动。(有一项多余)
A lot of health care is connected with being around trees. 1.
D
According to one 2015 study, a walk in the woods can make you feel seven years younger.They also do a great deal of good for the environment by reducing air pollution and taking in carbon dioxide from the atmosphere. 2.
B
A new study by researchers at University College London found that the trees in the London Borough of Camden store as much carbon per hectare (公顷) as rainforests.A tree's ability to take in carbon dioxide is especially useful when the tree is in cities or towns, where there are too many industrial activities. For the study, the researchers used laser scanning (扫描) methods to take their own carbon readings of trees from the ground as well as the air. 3.
E
They were able to know there are about 85,000 trees in Camden, where the university is based.They decided that Camden had a median carbon density (浓度) of around 55 tons of carbon per hectare (t/ha). Greener areas of the borough, like Highgate Cemetery, had a carbon density of 380 t/ha—levels that are typically seen in rainforests. 4.
C
So what exactly does this mean? Trees could help cool the atmosphere by removing carbon dioxide from the air. However, some climate scientists argue that it's more complicated (复杂的) than that. 5.
F
Still, with all of the other benefits trees offer, planting a seed or two couldn't hurt.A. We need to protect the ones we already have.
B. These benefits aren't just felt in the countryside either.
C. For comparison, major cities in the USA have a carbon density of 7.7.
D. They have been known to reduce people's stress and improve overall mental (精神的) health.
E. Then they compared their findings with the data from the UK Environment Agency.
F. They think the impact (影响) of tree - planting activities today may not be seen for many years.
答案：1-5 DBECF
【语篇解读】本文是一篇说明文，主要介绍了树木的保健和空气净化的作用，呼吁人们种树。
【语篇解读】本文是一篇说明文，主要介绍了树木的保健和空气净化的作用，呼吁人们种树。
解析：
【分析】
这是一篇说明文类的七选五题目，解题需紧扣上下文逻辑，逐空分析：
1. 第1空：前文点明健康与树木相关，后文举例“树林散步让人感觉年轻七岁”，需找承接健康话题的选项，从“精神健康”角度衔接前后内容。
2. 第2空：前文讲树木对环境的益处，后文以伦敦城区树木吸碳能力堪比雨林为例，需找能将话题从乡村拓展到城市的选项，体现益处的普遍性。
3. 第3空：前文提到研究人员用激光扫描获取碳数据，后文说明得知Camden的树木数量，需找数据获取后的后续操作选项，衔接数据处理与结果呈现。
4. 第4空：前文给出Camden绿化区的碳密度数值，需找通过对比突出该数值特殊性的选项，强化树木吸碳能力的说明。
5. 第5空：前文提到气候科学家认为树木降温作用更复杂，需找解释“复杂”原因的选项，衔接后文“种树没坏处”的转折逻辑。
【解析】
1. 第1空：前句提到“很多保健都与身处树木周围有关”，后句举例树林散步的健康益处，D选项“它们能减轻人们的压力并改善整体精神健康”承接前文健康话题，与后文研究例子呼应，符合语境。
2. 第2空：前句讲树木对环境的好处，后句以伦敦Camden区的树为例说明其吸碳能力堪比雨林，B选项“这些益处也不只是在乡村能感受到”，将话题从乡村延伸到城市，自然衔接前后内容。
3. 第3空：前句提到研究人员用激光扫描获取碳数据，后句说明他们得知Camden的树木数量，E选项“然后他们将自己的发现与英国环境署的数据进行对比”，承接数据获取后的操作，合理引出最终统计结果。
4. 第4空：前句给出Camden绿化区的碳密度（380t/ha），C选项“相比之下，美国主要城市的碳密度为7.7”，通过对比突出Camden树木极强的吸碳能力，符合段落逻辑。
5. 第5空：前句提到气候科学家认为树木降温的作用更复杂，F选项“他们认为如今植树活动的影响可能要很多年后才能显现”，解释了“复杂”的原因，与后文“不过种树没坏处”的转折衔接自然。
【答案】
1-5 DBECF
【知识点】
英语七选五解题技巧；说明文语篇衔接；上下文逻辑推理
【点评】
本题围绕树木的健康与环境益处展开，属于典型的说明文七选五。解题核心是把握段落内部的逻辑关系，如话题承接、数据对比、观点解释等，要求学生具备较强的语篇理解能力和逻辑推理能力，通过分析上下文语义关联匹配选项。
【难度系数】
0.6
这是一篇说明文类的七选五题目，解题需紧扣上下文逻辑，逐空分析：
1. 第1空：前文点明健康与树木相关，后文举例“树林散步让人感觉年轻七岁”，需找承接健康话题的选项，从“精神健康”角度衔接前后内容。
2. 第2空：前文讲树木对环境的益处，后文以伦敦城区树木吸碳能力堪比雨林为例，需找能将话题从乡村拓展到城市的选项，体现益处的普遍性。
3. 第3空：前文提到研究人员用激光扫描获取碳数据，后文说明得知Camden的树木数量，需找数据获取后的后续操作选项，衔接数据处理与结果呈现。
4. 第4空：前文给出Camden绿化区的碳密度数值，需找通过对比突出该数值特殊性的选项，强化树木吸碳能力的说明。
5. 第5空：前文提到气候科学家认为树木降温作用更复杂，需找解释“复杂”原因的选项，衔接后文“种树没坏处”的转折逻辑。
【解析】
1. 第1空：前句提到“很多保健都与身处树木周围有关”，后句举例树林散步的健康益处，D选项“它们能减轻人们的压力并改善整体精神健康”承接前文健康话题，与后文研究例子呼应，符合语境。
2. 第2空：前句讲树木对环境的好处，后句以伦敦Camden区的树为例说明其吸碳能力堪比雨林，B选项“这些益处也不只是在乡村能感受到”，将话题从乡村延伸到城市，自然衔接前后内容。
3. 第3空：前句提到研究人员用激光扫描获取碳数据，后句说明他们得知Camden的树木数量，E选项“然后他们将自己的发现与英国环境署的数据进行对比”，承接数据获取后的操作，合理引出最终统计结果。
4. 第4空：前句给出Camden绿化区的碳密度（380t/ha），C选项“相比之下，美国主要城市的碳密度为7.7”，通过对比突出Camden树木极强的吸碳能力，符合段落逻辑。
5. 第5空：前句提到气候科学家认为树木降温的作用更复杂，F选项“他们认为如今植树活动的影响可能要很多年后才能显现”，解释了“复杂”的原因，与后文“不过种树没坏处”的转折衔接自然。
【答案】
1-5 DBECF
【知识点】
英语七选五解题技巧；说明文语篇衔接；上下文逻辑推理
【点评】
本题围绕树木的健康与环境益处展开，属于典型的说明文七选五。解题核心是把握段落内部的逻辑关系，如话题承接、数据对比、观点解释等，要求学生具备较强的语篇理解能力和逻辑推理能力，通过分析上下文语义关联匹配选项。
【难度系数】
0.6