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试题答案

本文从以下几个角度介绍。

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6、[学科网]2025届高三4月大联考数学(新课标卷E)试题


5、[学科网]2025届高三4月大联考生物(新课标卷E)试题


B. She is walking.
C. He is looking out of the window.
( )5. A. Li Ming is dancing.
B. Jenny is singing.
C. Some women are dancing.
三、听录音，补全所缺单词。
It's Sunday morning. There are1. 2. in the park. A 3. is singing with her mother.Some 4. are playing basketball.Some 5. are dancing.


Last year, I returned to Dunhuang, a city famous for 3 (it) ancient Buddhist grottoes and murals (佛教石窟和壁画). The unique beauty of northwestern China became increasingly easy to see as I drove 4 (far) from Lanzhou. The barren (荒芜的) hills and open spaces were covered in snow 5 sparkled (闪耀) under the winter sun.
When I finally reached Dunhuang eight hours later, the temperatures 6 (drop) well below zero. The famous Mogao Caves show the rich cultural and spiritual 7 (exchange) that took place along the ancient Silk Road. The contrast between the cold, empty landscape surrounding Dunhuang and the colorful sacredness of the caves was 8 (strike).
9 the amazing cultural heritage in Dunhuang, Gansu is not the most attractive place to live, but I am still proud of once 10 (live) there. It is where I truly feel at home.
（24-25高一上·湖南湘潭·期末）阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
In some countries of West Yunnan Province, there exists a kind of “cat” 1 (call) Tile Cat (瓦猫), which refers 2 the cat-like decoration (装饰) made from tiles placed in that the middle of the home’s ridge (脊). It is said that it can drive bad luck 3 can protect the whole family.
Once a new house is finished, a ceremony is required 4 (inspire) the “power" of the Tile Cat before it is put on the home’s ridge. 5 (general) falling during the second or eighth month of the Chinese Lunar calendar, a lucky day is chosen and a person is invited to perform the ceremony.
During this time, the person organizes a series of sacrificial (用于祭献的) 6 (activity). Later on, the Tile Cat is passed around and touched by the whole family, 7 stand and see the whole process while the roof is being covered with tiles, until the Tile Cat 8 (place) firmly and forever in the middle of the home’s ridge.


5、[学科网]2025届高三4月大联考历史(新课标卷E)试题


2、[学科网]2025届高三4月大联考生物学(新课标卷E)试题


4、[学科网]2025届高三4月大联考生物学(新课标卷E)试题


6、[学科网]2025届高三4月大联考生物(新课标卷E)试题


6、[学科网]2025届高三4月大联考生物(新课标卷E)试题


5、[学科网]2025届高三4月大联考英语(新课标卷E)试题


【答案】（1）碱；红
（2）强
（3）大
【知识点】酸碱指示剂的性质及应用；溶液的酸碱性与pH值的关系；溶液的酸碱度测定
【解析】【解答】（1）因为图示中显示厨房清洁剂pH在12-13之间大于7，所以厨房清洁剂显碱性。滴入酚酞显红色。答案：碱 红
（2）根据图示所体现酸雨pH在4-5之间，正常雨水在5-6之间，所以可以看出酸雨的酸性比正常雨水强。
答案：强


三、实验题（本题共1小题，每空1分，共9分）
25.质量守恒定律的发现对化学发展作出巨大贡献。
(一)质量守恒定律发现史
波义尔(1663年) 罗蒙诺索夫(1756年) 拉瓦锡(1777年)
实验前先称量金属质量，在密闭容器中加热金属，得到金属灰。立即打开容器，称量金属灰的质量。 锡()在密闭容器里加热，生成白色氧化锡()，容器和容器中物质的总质量加热前后都没有发生变化。 45.0份质量的在密闭容器中加热完全分解，生成41.5份质量的和 份质量的，得到与罗蒙诺索夫相同结论。
(1)波义尔实验中，质量：金属灰_______原金属(填“>”、“=”、“<”)。
(2)罗蒙诺索夫实验中，发生的化学反应方程式为 。


3、[学科网]2025届高三4月大联考化学(新课标卷E)答案