UNIT 2
阅读 (2025·广东调研一改编) 体裁:记叙文 主题语境:优秀品行 难度:★★☆☆☆
One sunny afternoon in the park, I witnessed a remarkable scene. An elderly man was standing by a path, looking confused and lost. Just at that moment, a young girl approached him. She asked him gently what was wrong and listened patiently as he struggled to explain.
Without hesitation, she slowly guided him along the path, chatting with him to ease his anxiety. They walked together until they reached the place the old man was supposed to be. The old man smiled with thankfulness and relief.
After helping the old man, the girl spent some more time with him, sharing some interesting stories and making him laugh. The old man’s eyes sparkled with joy, and clearly this interaction had brightened his day.
I continued to observe as the girl then stayed with the old man for a while longer. They sat on a bench together, and the girl began to tell him about her own life, her dreams, and her adventures. The old man listened attentively, nodding and smiling from time to time. It was a beautiful sight to behold, this unlikely pair sharing such a genuine and heartwarming connection.
This encounter made me reflect on the importance of kindness in our society. In a world that can often seem cold and hurried, acts like the girl’s are like the tower of light, showing us the way to a more empathetic (同情的) and caring existence. It also made me think about how we all have the potential to make a difference in someone else’s life, no matter how small the act may be.
Now, whenever I recall this scene, it warms my heart and reminds me to be more willing to offer a helping hand, to spread kindness wherever I go, and to believe in the goodness that lies within each of us. (续写素材积累)
1.What did the girl do for the old man
A. She gave him a comforting hug. B. She showed him the way.
C. She took a photo with him. D. She bought him a refreshing drink.
2.How did the old man feel in the end
A. Grateful and delighted. B. Hungry and sad.
C. Fearful and angry. D. Cold and tired.
3.What can we infer about the author’s attitude
A. Doubtful. B. Disapproving. C. Negative. D. Admiring.
4.Where is this passage most likely from
A. An informative travel guide. B. An educational science textbook.
C. A personal blog. D. A trendy magazine.
完形填空 (2023·天津高考改编) 体裁:记叙文 主题语境:优秀品行 难度:★★★☆☆
There are moments when strangers’ lives collide (碰撞) by accident, and even though they may never see each other again, they’re changed forever. These can be moments when true character is 1 , often through acts of kindness and generosity of unlikely heroes.
Not long ago, I was a(n) 2 to such a moment. On a summer midnight, my parents and I had just got off a flight when a passenger suddenly fell to the ground. We 3 ran toward him. My parents, who are doctors, began trying to 4 what had happened. As they asked him questions, other passengers joined us. My parents 5 that the man was hypoglycaemic (低血糖的) and needed sugar. However, there was none.
Just then, a young boy, Mecca, arrived at the 6 with the flight attendants. He quietly announced, “I have a Snickers (士力架巧克力)!” He dug deep into his backpack, 7 a Snickers, and handed it to my father.
Within seconds of the Snickers, the man regained 8 . Mecca, a fourth grader, 9 this stranger’s life!
No one could have guessed that earlier that night, Mecca had just been through a(n) 10 time. His father’s flight was unexpectedly canceled, 11 him to fly alone. He had never flown alone before and was nervous. His grandmother filled his backpack with candy to make him less 12 .
When Mecca’s parents knew his 13 actions, they smiled from ear to ear. They were surprised that he was able to think about the candy during the 14 .
As time goes on, I remain 15 by the experience of witnessing a nine-year-old save a stranger’s life. Even today Mecca’s kindness continues to make me smile.(续写升华可借鉴)
1.A. created B. revealed C. introduced D. preserved
2.A. witness B. visitor C. match D. exception
3.A. safely B. accidentally C. casually D. immediately
4.A. get across B. figure out C. take down D. bring up
5.A. recalled B. determined C. admitted D. guaranteed
6.A. station B. destination C. scene D. department
7.A. gave away B. set aside C. pulled out D. kept off
8.A. memory B. appetite C. independence D. consciousness
9.A. risked B. saved C. sacrificed D. respected
10.A. proper B. tough C. enjoyable D. mysterious
11.A. forcing B. urging C. reminding D. permitting
12.A. guilty B. anxious C. sensitive D. doubtful
13.A. modest B. ambitious C. heroic D. confident
14.A. flight B. operation C. performance D. emergency
15.A. relieved B. puzzled C. frustrated D. inspired
语法填空 (2022·浙江高考) 体裁:记叙文 主题语境:环境保护 难度:★★☆☆
Kim Cobb, a professor at the Georgia Institute of Technology in Atlanta, is one of a small but growing minority of academics 1.__________ are cutting back on their air travel because of climate change. Travelling to conferences, lectures, workshops, and the like—frequently by plane— 2.__________ (view) as important for scientists to get together and exchange information. But Cobb and others 3.__________ (be) now questioning that idea—pushing conferences to provide more chances to participate remotely and 4.__________ (change) their personal behavior to do their part in dealing with the climate change crisis. On a website called No Fly Climate Sci, for example, 5.__________ (rough) 200 academics—many of them climate scientists— 6.__________ (promise) to fly as little as possible since the effort started two years ago.
Cobb, for her part, started to ask conference organizers who invited her to speak 7.__________ she could do so remotely; about three-quarters of 8.__________ time, they agreed. When the answer was no, she declined the 9.__________ (invite). That approach brought Cobb’s air travel last year down by 75%, and she plans 10.__________ (continue) the practice. “It has been fairly rewarding,” she says—“a really positive change”.
限时练
阅读
本文讲述了作者在公园里目睹的一位善良的年轻女孩帮助一位迷路的老人的感人场景,并由此反思善良的重要性。
1.B 细节理解题。根据第二段中的“They walked together until they reached the place the old man was supposed to be.(他们一起走到老人应该去的地方)”可知,女孩给老人带路。故选B。
2.A 细节理解题。根据第二段中的“The old man smiled with thankfulness and relief.(老人感激且欣慰地笑了)”和第三段中的“The old man’s eyes sparkled with joy (老人的眼睛闪烁着喜悦)”可知,老人感到既感激又开心。故选A。
3.D 推理判断题。根据第四段最后一句“这是一个美丽的景象,这个老人和年轻女孩分享了如此真诚和温暖的联系”和最后一段“现在,每当我回想起这一幕,我的心就会感到温暖,并提醒我要更愿意伸出援手,在我去的每个地方传播善意,并相信我们每个人内心都有善良。”可知,作者对女孩的行为是赞赏的。故选D。
4.C 推理判断题。本文叙述了作者在公园里目睹的一位善良的年轻女孩帮助一位迷路的老人的感人场景,并由此反思善良的重要性。由此可知,这篇文章有可能出自个人博客,作者在博客中分享个人经历和想法。故选C。
完形填空
本文讲述了一个乘客在机场因低血糖突然倒地,陌生人们一起帮忙,其中一个年仅九岁的男孩麦加用自己的巧克力救了这个人的命。这种不期而遇的碰撞可以改变人们的生命,也可以展现出人性中最善良的一面。
1.B 这些时刻可能揭示了真正的品格,通常是通过非凡英雄的善良和慷慨的行为展现出来的。故选B。create “创造”; reveal “揭示”; introduce “引入”; preserve “保护”。
2.A 根据下文的内容和尾段中的“witnessing a nine-year-old save a stranger’s life”可知,此处表作者也是这种时刻的亲历者。故选A。witness “目击者,亲历者”; visitor “访问者;游客”; match “比赛”; exception “例外”。
3.D 根据上文的“my parents and I had just got off a flight when a passenger suddenly fell to the ground”可知,看到有人突然倒下,故作者和家人立刻跑过去。故选D。safely “安全地”; accidentally “意外地”; casually “随意地”; immediately “立即”。
4.B 根据上文的“who are doctors, began trying to 4 what had happened”可知,作者的父母去弄清楚到底发生了什么。故选B。get across “被传达;被理解;把……讲清楚”; figure out “弄清楚”; take down “拆除”; bring up “提出;抚养;养育;教养;呕吐”。
5.B 上文提到作者的父母去弄清楚到底发生了什么,此处指他们查明这个人患有低血糖症,需要糖。故选B。recall “回忆起”; determine “查明,确定”; admit “承认”; guarantee “保证”。
6.C 就在这时,一个名叫麦加的小男孩和空乘人员来到了现场。故选C。station “站”; destination “目的地”; scene “地点,现场”; department “部门”。
7.C 麦加从背包里掏出一块士力架。故选C。give away “赠送”; set aside “搁置”; pull out “掏出”; keep off “使……不接近”。
8.D 吃了士力架,男子血糖恢复,很快就苏醒过来。故选D。memory “记忆力”; appetite “食欲”; independence “独立”; consciousness “知觉;意识”。
9.B 上文提到男子恢复意识,因此四年级学生麦加救了这个陌生人的命!故选B。risk “冒险”; save “拯救”; sacrifice “牺牲”; respect “尊敬;尊重”。
10.B 根据下文的“His father’s flight was unexpectedly canceled, 11 to fly alone.”可知,他父亲的航班被意外取消,迫使他独自飞行,由此可知麦加刚刚经历了一段艰难的时期。故选B。proper “适当的”; tough “艰难的”; enjoyable “令人愉快的”; mysterious “神秘的”。
11.A 根据上文的“His father’s flight was unexpectedly canceled,”可知,由于麦加父亲的航班被意外取消,迫使麦加独自乘坐航班。故选A。force “强迫,迫使”; urge “催促,竭力主张”; remind “提醒”; permit “允许”。
12.B 根据上文的“He had never flown alone before and was nervous.”可知,麦加从未独自坐过航班,因此祖母在他的背包中装满糖,不让他焦虑。故选B。guilty “愧疚的”; anxious “焦虑的”; sensitive “敏感的”; doubtful “怀疑的”。
13.C 上文提到麦加救助低血糖男子,这是英勇事迹。故选C。modest “谦虚的”; ambitious “有抱负的”; heroic “英勇的”; confident “自信的”。
14.D 上文叙述的男子昏倒是一种紧急情况,麦加递送士力架给作者的父亲,故此处指麦加的父母都很惊讶,麦加在紧急情况下还能想到糖果。故选D。flight “航班”; operation “手术”; performance “表演”; emergency “紧急情况”。
15.D 根据下文的“Even today Mecca’s kindness continues to make me smile.”可知,在经历此事后,直到今天,麦加的善良仍然让作者微笑,由此可知,一个九岁的孩子麦加拯救陌生人的经历激励着作者。故选D。relieved “放心的”; puzzled “困惑的”; frustrated “沮丧的”; inspired “激励的”。
语法填空
为了应对气候变化,以亚特兰大的教授Kim Cobb为代表的一部分学者减少学术活动中的航空旅行,优先选择通过远程方式参与活动。
1.who/that 考查定语从句。分析句子结构可知,空处引导定语从句,且在从句中作主语,先行词为指代人的a small but growing minority of academics,故填who/that。
2.is viewed/has been viewed 考查时态、语态和主谓一致。空处为句子的谓语部分,句子主语为动名词短语“Travelling to ... and the like”,表示单数概念,与view为被动关系;再结合语境可知,此处可表示现在的情况或已经发生过的对现在造成影响的动作,故填is viewed/has been viewed。
3.are 考查时态和主谓一致。根据语境和空后的“now questioning”可知,空处所在句的时态为现在进行时,且主语表示复数意义,故填are。question在此处为动词,表示“疑问,怀疑”。
4.changing 考查非谓语动词。空处与上文的pushing并列作状语,又因句子主语Cobb and others与change为逻辑上的主谓关系,故填changing。
5.roughly 考查词形转换。此处表示大约200位学者,空处应用所给词的副词形式作状语。roughly“大约,大致,差不多”。
6.have promised 考查时态。根据时间状语“since the effort started two years ago”可知,此处应用现在完成时。
7.whether/if 考查宾语从句。句意:就Cobb而言,她开始询问邀请她发言的会议组织者她是否可以远程发言。空处引导宾语从句,表示“是否”,故填whether/if。
8.the 考查冠词。句意:约四分之三的情况下,他们(会议组织者)同意了。此处特指上文提到的Cobb询问邀请她发言的会议组织者是否可以远程发言这种情况,故填定冠词the。
9.invitation 考查词形转换。空处作declined的宾语,应用所给词的名词形式,故填invitation“邀请”。
10.to continue 考查非谓语动词。plan to do sth.“计划做某事”为固定搭配,故用动词不定式to continue。(共32张PPT)
限时练
必修第三册 UNIT 2
阅读 (2025·广东调研一改编) 体裁：记叙文 主题语境：优秀品行 难度：★★☆☆☆
One sunny afternoon in the park, I witnessed a remarkable scene. An elderly man was standing by a path, looking confused and lost. Just at that moment, a young girl approached him. She asked him gently what was wrong and listened patiently as he struggled to explain.
Without hesitation, she slowly guided him along the path, chatting with him to ease his anxiety. They walked together until they reached the place the old man was supposed to be. The old man smiled with thankfulness and relief.
After helping the old man, the girl spent some more time with him, sharing some interesting stories and making him laugh. The old man’s eyes sparkled with joy, and clearly this interaction had brightened his day.
I continued to observe as the girl then stayed with the old man for a while longer. They sat on a bench together, and the girl began to tell him about her own life, her dreams, and her adventures. The old man listened attentively, nodding and smiling from time to time. It was a beautiful sight to behold, this unlikely pair sharing such a genuine and heartwarming connection.
This encounter made me reflect on the importance of kindness in our society. In a world that can often seem cold and hurried, acts like the girl’s are like the tower of light, showing us the way to a more empathetic (同情的) and caring existence. It also made me think about how we all have the potential to make a difference in someone else’s life, no matter how small the act may be.
Now, whenever I recall this scene, it warms my heart and reminds me to be more willing to offer a helping hand, to spread kindness wherever I go, and to believe in the goodness that lies within each of us. (续写素材积累)
本文讲述了作者在公园里目睹的一位善良的年轻女孩帮助一位迷路的老人的感人场景，并由此反思善良的重要性。
1.What did the girl do for the old man
She gave him a comforting hug.
B. She showed him the way.
C. She took a photo with him.
D. She bought him a refreshing drink.
细节理解题。根据第二段中的“They walked together until they reached the place the old man was supposed to be.(他们一起走到老人应该去的地方)”可知，女孩给老人带路。故选B。
答案与解析
2.How did the old man feel in the end
A. Grateful and delighted. B. Hungry and sad.
C. Fearful and angry. D. Cold and tired.
细节理解题。根据第二段中的“The old man smiled with thankfulness and relief.(老人感激且欣慰地笑了)”和第三段中的“The old man’s eyes sparkled with joy (老人的眼睛闪烁着喜悦)”可知，老人感到既感激又开心。故选A。
答案与解析
3.What can we infer about the author’s attitude
Doubtful. B. Disapproving.
C. Negative. D. Admiring.
推理判断题。根据第四段最后一句“这是一个美丽的景象，这个老人和年轻女孩分享了如此真诚和温暖的联系”和最后一段“现在，每当我回想起这一幕，我的心就会感到温暖，并提醒我要更愿意伸出援手，在我去的每个地方传播善意，并相信我们每个人内心都有善良。”可知，作者对女孩的行为是赞赏的。故选D。
答案与解析
4.Where is this passage most likely from
A. An informative travel guide. B. An educational science textbook.
C. A personal blog. D. A trendy magazine.
推理判断题。本文叙述了作者在公园里目睹的一位善良的年轻女孩帮助一位迷路的老人的感人场景，并由此反思善良的重要性。由此可知，这篇文章有可能出自个人博客，作者在博客中分享个人经历和想法。故选C。
答案与解析
完形填空 (2023·天津高考改编) 体裁：记叙文 主题语境：优秀品行 难度：★★★☆☆
There are moments when strangers’ lives collide (碰撞) by accident, and even though they may never see each other again, they’re changed forever. These can be moments when true character is 1 , often through acts of kindness and generosity of unlikely heroes.
Not long ago, I was a(n) 2 to such a moment. On a summer midnight, my parents and I had just got off a flight when a passenger suddenly fell to the ground. We 3 ran toward him. My parents, who are doctors, began trying to 4 what had happened. As they asked him questions, other passengers joined us. My parents 5 that the man was hypoglycaemic (低血糖的) and needed sugar. However, there was none.
Just then, a young boy, Mecca, arrived at the 6 with the flight attendants. He quietly announced, “I have a Snickers (士力架巧克力)!” He dug deep into his backpack, 7 a Snickers, and handed it to my father.
Within seconds of the Snickers, the man regained 8 . Mecca, a fourth grader, 9 this stranger’s life!
No one could have guessed that earlier that night, Mecca had just been through a(n) 10 time. His father’s flight was unexpectedly canceled, 11 him to fly alone. He had never flown alone before and was nervous. His grandmother filled his backpack with candy to make him less 12 .
When Mecca’s parents knew his 13 actions, they smiled from ear to ear. They were surprised that he was able to think about the candy during the 14 .
As time goes on, I remain 15 by the experience of witnessing a nine-year-old save a stranger’s life. Even today Mecca’s kindness continues to make me smile.(续写升华可借鉴)
1.A. created B. revealed C. introduced D. preserved
2.A. witness B. visitor C. match D. exception
3.A. safely B. accidentally C. casually D. immediately
4.A. get across B. figure out C. take down D. bring up
5.A. recalled B. determined C. admitted D. guaranteed
6.A. station B. destination C. scene D. department
7.A. gave away B. set aside C. pulled out D. kept off
8.A. memory B. appetite C. independence D. consciousness
9.A. risked B. saved C. sacrificed D. respected
10.A. proper B. tough C. enjoyable D. mysterious
11.A. forcing B. urging C. reminding D. permitting
12.A. guilty B. anxious C. sensitive D. doubtful
13.A. modest B. ambitious C. heroic D. confident
14.A. flight B. operation C. performance D. emergency
15.A. relieved B. puzzled C. frustrated D. inspired
本文讲述了一个乘客在机场因低血糖突然倒地，陌生人们一起帮忙，其中一个年仅九岁的男孩麦加用自己的巧克力救了这个人的命。这种不期而遇的碰撞可以改变人们的生命，也可以展现出人性中最善良的一面。
1.B 这些时刻可能揭示了真正的品格，通常是通过非凡英雄的善良和慷慨的行为展现出来的。故选B。create “创造”; reveal “揭示”; introduce “引入”; preserve “保护”。
答案与解析
2.A 根据下文的内容和尾段中的“witnessing a nine-year-old save a stranger’s life”可知,此处表作者也是这种时刻的亲历者。故选A。witness “目击者，亲历者”; visitor “访问者；游客”; match “比赛”; exception “例外”。
3.D 根据上文的“my parents and I had just got off a flight when a passenger suddenly fell to the ground”可知，看到有人突然倒下，故作者和家人立刻跑过去。故选D。safely “安全地”; accidentally “意外地”; casually “随意地”; immediately “立即”。
答案与解析
4.B 根据上文的“who are doctors, began trying to 4 what had happened”可知，作者的父母去弄清楚到底发生了什么。故选B。get across “被传达；被理解；把……讲清楚”; figure out “弄清楚”; take down “拆除”; bring up “提出；抚养；养育；教养；呕吐”。
5.B 上文提到作者的父母去弄清楚到底发生了什么，此处指他们查明这个人患有低血糖症，需要糖。故选B。recall “回忆起”; determine “查明，确定”; admit “承认”; guarantee “保证”。
答案与解析
6.C 就在这时，一个名叫麦加的小男孩和空乘人员来到了现场。故选C。station “站”; destination “目的地”; scene “地点，现场”; department “部门”。
7.C 麦加从背包里掏出一块士力架。故选C。give away “赠送”; set aside “搁置”; pull out “掏出”; keep off “使……不接近”。
8.D 吃了士力架，男子血糖恢复，很快就苏醒过来。故选D。memory “记忆力”; appetite “食欲”; independence “独立”; consciousness “知觉；意识”。
答案与解析
9.B 上文提到男子恢复意识，因此四年级学生麦加救了这个陌生人的命!故选B。risk “冒险”; save “拯救”; sacrifice “牺牲”; respect
“尊敬；尊重”。
10.B 根据下文的“His father’s flight was unexpectedly canceled,
11 him to fly alone.”可知，他父亲的航班被意外取消，迫使他独自飞行，由此可知麦加刚刚经历了一段艰难的时期。故选B。proper “适当的”; tough “艰难的”; enjoyable “令人愉快的”; mysterious “神秘的”。
答案与解析
11.A 根据上文的“His father’s flight was unexpectedly canceled，”可知，由于麦加父亲的航班被意外取消,迫使麦加独自乘坐航班。故选A。force “强迫，迫使”; urge “催促,竭力主张”; remind “提醒”; permit “允许”。
12.B 根据上文的“He had never flown alone before and was nervous.”可知，麦加从未独自坐过航班，因此祖母在他的背包中装满糖，不让他焦虑。故选B。guilty “愧疚的”; anxious “焦虑的”; sensitive “敏感的”; doubtful “怀疑的”。
答案与解析
13.C 上文提到麦加救助低血糖男子，这是英勇事迹。故选C。modest “谦虚的”; ambitious “有抱负的”; heroic “英勇的”; confident “自信的”。
14.D 上文叙述的男子昏倒是一种紧急情况，麦加递送士力架给作者的父亲，故此处指麦加的父母都很惊讶，麦加在紧急情况下还能想到糖果。故选D。flight “航班”; operation “手术”; performance “表演”; emergency “紧急情况”。
答案与解析
15.D 根据下文的“Even today Mecca’s kindness continues to make me smile.”可知，在经历此事后，直到今天，麦加的善良仍然让作者微笑，由此可知，一个九岁的孩子麦加拯救陌生人的经历激励着作者。故选D。relieved “放心的”; puzzled “困惑的”; frustrated
“沮丧的”; inspired “激励的”。
答案与解析
语法填空 (2022·浙江高考) 体裁：记叙文 主题语境：环境保护 难度：★★ ☆☆
Kim Cobb, a professor at the Georgia Institute of Technology in Atlanta, is one of a small but growing minority of academics 1.__________ are cutting back on their air travel because of climate change. Travelling to conferences, lectures, workshops, and the like—frequently by plane— 2._______________________________ (view) as important for scientists to get together and exchange information. But Cobb and others 3.__________ (be) now questioning that idea—pushing
who/that
is viewed/has been viewed
are
conferences to provide more chances to participate remotely and 4.__________ (change) their personal behavior to do their part in dealing with the climate change crisis. On a website called No Fly Climate Sci, for example, 5.__________ (rough) 200 academics—many of them climate scientists— 6.__________________ (promise) to fly as little as possible since the effort started two years ago.
changing
roughly
have promised
Cobb, for her part, started to ask conference organizers who invited her to speak 7.__________ she could do so remotely; about three-quarters of 8.__________ time, they agreed. When the answer was no, she declined the 9.__________ (invite). That approach brought Cobb’s air travel last year down by 75%, and she plans 10.____________ (continue) the practice. “It has been fairly rewarding,” she says—“a really positive change”.
whether/if
the
invitation
to continue
为了应对气候变化，以亚特兰大的教授Kim Cobb为代表的一部分学者减少学术活动中的航空旅行，优先选择通过远程方式参与活动。
1.who/that 考查定语从句。分析句子结构可知，空处引导定语从句，且在从句中作主语，先行词为指代人的a small but growing minority of academics，故填who/that。
答案与解析
2.is viewed/has been viewed 考查时态、语态和主谓一致。空处为句子的谓语部分，句子主语为动名词短语“Travelling to ... and the like”，表示单数概念，与view为被动关系；再结合语境可知，此处可表示现在的情况或已经发生过的对现在造成影响的动作，故填is viewed/has been viewed。
3.are 考查时态和主谓一致。根据语境和空后的“now questioning”可知，空处所在句的时态为现在进行时，且主语表示复数意义，故填are。question在此处为动词，表示“疑问，怀疑”。
答案与解析
4.changing 考查非谓语动词。空处与上文的pushing并列作状语，又因句子主语Cobb and others与change为逻辑上的主谓关系，故填changing。
5.roughly 考查词形转换。此处表示大约200位学者，空处应用所给词的副词形式作状语。roughly“大约，大致，差不多”。
6.have promised 考查时态。根据时间状语“since the effort started two years ago”可知，此处应用现在完成时。
答案与解析
7.whether/if 考查宾语从句。句意：就Cobb而言，她开始询问邀请她发言的会议组织者她是否可以远程发言。空处引导宾语从句,表示“是否”，故填whether/if。
8.the 考查冠词。句意：约四分之三的情况下,他们(会议组织者)同意了。此处特指上文提到的Cobb询问邀请她发言的会议组织者是否可以远程发言这种情况，故填定冠词the。
答案与解析
9.invitation 考查词形转换。空处作declined的宾语，应用所给词的名词形式，故填invitation“邀请”。
10.to continue 考查非谓语动词。plan to do sth.“计划做某事”为固定搭配，故用动词不定式to continue。
答案与解析
