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1 Complete the passage with the proper forms of the words in brackets. 用括号中所给单词的适当形式补全短文。
Can air pollution cancel out your exercise benefits?
Hey, there! Have you ever gone for a run or played sports outside? You’re probably thinking that you’re doing something great for your (1)
People living in highly polluted areas experienced fewer positive effects from (3)
$So, what’s the problem? When you exercise, you breathe faster and deeper. This means you breathe in much more air than usual. More harmful particles (like PM_{2.5}) go deep into your lungs and even enter your bloodstream. It hurts your lungs and heart. Your body gets overloaded with toxins ($毒素). You might cough, or feel tired more easily. The benefits you gain from exercise drop (5)
But don’t worry! Staying active is still (6)
Here’s what you can do: Check air quality forecasts before heading out. Choose cleaner routes, like parks instead of busy roads. Working out indoors is also a wise choice, as long as you keep the room full of fresh air.
Staying active is necessary, but breathing clean air is also of great (7)
Can air pollution cancel out your exercise benefits?
Hey, there! Have you ever gone for a run or played sports outside? You’re probably thinking that you’re doing something great for your (1)
health
(healthy). But did you know that breathing polluted air might make your workout less (2) effective
(effect) than you thought?People living in highly polluted areas experienced fewer positive effects from (3)
physical
(physics) activity. Shockingly, more than 90% of the world’s (4) population
(populate) lives in areas where air pollution levels go beyond WHO safety limits!$So, what’s the problem? When you exercise, you breathe faster and deeper. This means you breathe in much more air than usual. More harmful particles (like PM_{2.5}) go deep into your lungs and even enter your bloodstream. It hurts your lungs and heart. Your body gets overloaded with toxins ($毒素). You might cough, or feel tired more easily. The benefits you gain from exercise drop (5)
significantly
(significant).But don’t worry! Staying active is still (6)
beneficial
(benefit), even in polluted places. Experts say that good air quality would make your exercise better.Here’s what you can do: Check air quality forecasts before heading out. Choose cleaner routes, like parks instead of busy roads. Working out indoors is also a wise choice, as long as you keep the room full of fresh air.
Staying active is necessary, but breathing clean air is also of great (7)
importance
(important). Keep moving, and be smart about where and when!答案
(1) health (2) effective (3) physical (4) population (5) significantly (6) beneficial (7) importance
解析
【分析】本题为用括号内单词的适当形式填空，核心考查词性转换及不同词性在句子中的语法功能。解题时需先分析每个空格在句中充当的成分，确定所需词性，再将括号内的单词转换为对应词性的正确形式：1. 空格前为形容词性物主代词your，需接名词；2. less后需接形容词构成比较级；3. 空格修饰名词activity，需用形容词；4. 名词所有格world’s后需接名词；5. 空格修饰动词drop，需用副词；6. 系动词is后需接形容词作表语；7. “of + 名词”结构中需用名词。
【解析】1. 空格前是形容词性物主代词your，需接名词，healthy的名词形式为health，故填health；2. less是little的比较级，后接形容词，effect的形容词形式为effective，构成“less effective”（不太有效），故填effective；3. 空格修饰名词activity，需用形容词，physics的形容词形式为physical，“physical activity”意为“体力活动”，故填physical；4. 名词所有格world’s后需接名词，populate的名词形式为population（人口），故填population；5. 空格修饰动词drop，需用副词，significant的副词形式为significantly，故填significantly；6. 系动词is后需接形容词作表语，benefit的形容词形式为beneficial（有益的），故填beneficial；7. “of + 名词”相当于形容词作表语，“of great importance”意为“非常重要的”，important的名词形式为importance，故填importance。
【答案】(1) health (2) effective (3) physical (4) population (5) significantly (6) beneficial (7) importance
【知识点】词性转换、名词的用法、形容词与副词的用法
【点评】本题聚焦英语基础词性转换，考查不同词性在句子中的语法功能，属于常见的基础题型，只要掌握常见的词性转换规则即可轻松作答。
【难度系数】0.3
【解析】1. 空格前是形容词性物主代词your，需接名词，healthy的名词形式为health，故填health；2. less是little的比较级，后接形容词，effect的形容词形式为effective，构成“less effective”（不太有效），故填effective；3. 空格修饰名词activity，需用形容词，physics的形容词形式为physical，“physical activity”意为“体力活动”，故填physical；4. 名词所有格world’s后需接名词，populate的名词形式为population（人口），故填population；5. 空格修饰动词drop，需用副词，significant的副词形式为significantly，故填significantly；6. 系动词is后需接形容词作表语，benefit的形容词形式为beneficial（有益的），故填beneficial；7. “of + 名词”相当于形容词作表语，“of great importance”意为“非常重要的”，important的名词形式为importance，故填importance。
【答案】(1) health (2) effective (3) physical (4) population (5) significantly (6) beneficial (7) importance
【知识点】词性转换、名词的用法、形容词与副词的用法
【点评】本题聚焦英语基础词性转换，考查不同词性在句子中的语法功能，属于常见的基础题型，只要掌握常见的词性转换规则即可轻松作答。
【难度系数】0.3
