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试题答案

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1、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·历史A试题


1、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·历史A试题


19． ways to go
不同的路去学校。本题考查可数名词及其单复数和动词的形式。形容词Different修饰可数名词时，名词通常用复数形式ways；动词不定式to go作后置定语，故答案为ways；to go。
20．lights/ights
我们应该注意红绿灯。本题考查名词词组。light灯，可数名词，traffic lights交通灯，故答案为lights。
21．Take
在那边搭乘15路公交。本题考查动词的形式。该句是祈使句，祈使句用动词原形，故答案为Take。
22．wear


The school friendship forum (论坛) is opened. Let’s see the self-introduction of three students.
Hello, I’m Emily. I’m 13 and I’m from the UK. Now I live in Beijing with my parents and my two younger brothers. We have a lovely dog. Its name is Benny. It makes me very happy. I have many ________, such as reading and playing football.
Hi, I’m Marcus. I’m 14 and I come from Finland (芬兰). There are my parents, my elder sister and a cute cat in my family. The cat’s name is Luna. I really love playing basketball and listening to music. In my free time I enjoy walking in the park. My favourite food is reindeer stew (炖鹿肉). It’s a traditional dish in Finland. I hope to make more friends and have a great time in junior high.
Hi, friends, I’m Li Mei. I’m 12. I’m from Beijing, China. I live with my parents and my sister. We have a pet turtle at home. I love dancing and playing the piano. I also like travelling with my family on holidays. My favourite food is Beijing Roast Duck. It’s delicious. I’m a junior high school student now. It’s a new start in my life.
41．Which of the following is the best for “________”
A．friends B．hobbies C．pets D．subjects
42．How many people are there in Marcus’ family


4、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一· A答案


3、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·化学A答案


5、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一· A答案


1、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一· A答案


1、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·数学A试题


4、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·数学A答案


C．除H2O外，都含π键 D．除HCN外，都是σ键
【答案】C
【解析】HCN的结构式为H-C≡N，既有σ键也有π键；CO2的结构式为O=C=O，既有σ键也有π键；H2O的结构式是H—O—H，只含σ键；CO(NH2)2中含有碳氧双键，故既有σ键也有π键；C2H4中含有碳碳双键，既有σ键也有π键；故选C。
13．回答下列问题：
(1)1 mol CO2中含有的σ键数目为________。
(2)已知CO和CN－与N2结构相似，CO分子内σ键与π键个数之比为________。HCN分子中σ键与π键数目之比为________。
(3)肼(N2H4)分子可视为NH3分子中的—个氢原子被—NH2(氨基)取代形成的另一种氮的氢化物。肼可用作火箭燃料，燃烧时发生的反应是：


(1)Na2A溶液显________(填“酸性”、“中性”或“碱性”)，理由是______________________________(用离子方程式表示)。


3、[天舟益考衡中同卷]2025-2026学年度高三上学期自我提升一·化学A答案