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3、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学试题


6、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学试题


With the invention of canned goods in the 19th century，the industrial﹣scale transformation of food became possible.According to the UN，the average daily food supply available for a person in the rich world increased by over 20% between 1961 and 2021，to 3，500 kilocalories.In that time，obesity rates have more than tripled；today，nearly one in three people globally is obese or overweight.
Now worries are mounting that the heavy processing used to cook up cheap，tasty snacks may itself be harmful.A particular target is "ultra﹣processed foods" （UPFs），heavily processed foods like ice﹣cream or instant noodles.At the heart of the debate is a question：are UPFs unhealthy because their nutritional content is poor，or does the processing somehow pose risks in itself？At the turn of the 21st century some scientists noticed that people in Brazil were buying less sugar and oil than in the past.Yet rates of obesity were still rising.This unintentionally occurred with the growing popularity of packaged desserts and ready﹣made meals.
By now numerous studies have shown that people who consume diets high in UPFs tend to have more health problems.But a recent analysis by Samuel Dicken and Rachel Batterham at University College London reviewed 37 studies and found that even after adjusting for fat，sugar and salt UPFs were still strongly linked to poor health.That suggests there is more to their harm than just a poor nutrient profile.
Where those harms come from is still unclear，however.With so many influential causes that could also explain poor health —such as income and education —observational studies alone cannot offer conclusive answers.Arne Astrup，a Danish researcher，argues that evidently most of the studies that make statistical adjustments to try to isolate （分离） the effects of processing are "not good enough".
（1）Why did Mesoamericans process corn kernels？ 　 　
A.To ensure better consumption.
B.To enable easy handling.


Why is Lovet so clever Because scientists 129 a CPU (中央处理器) in is body. The CPU is so powerful that Lovet has the 130 power of an 8-year-old child. No wonder it can do the same thing as kids do.
121．A．fast B．surprised C．quiet D．bored .
122．A．parents B．kids C．teachers D．robots
123．A．abilities B．hobbies C．habits D．messages
124．A．sports B．study C．housework D．homework
125．A．learn B．eat C．work D．sleep
126．A．slowly B．fast C．carefully D．aloud


1、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案


1、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案


1、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案


3、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案


3、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学试题


1、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案


(6)CO2在饱和Na2CO3溶液中的溶解量小，生成NaHCO3的量少，NaHCO3在该溶液中没有达到过饱和状
态，故不能析出晶体
(7)70%
19.（14分)每空2分
(1)酰胺基、醚键
(2)丙二酸二甲酯
A


解析　设达到平衡时CO转化的浓度为x mol·L－1，则平衡时c(CO)＝c(H2O)＝(0.020－x)mol·L－1，c(CO2)＝c(H2)＝x mol·L－1。K＝＝＝9，解得x＝0.015，则CO的转化率为×100%＝75%。
7．可逆反应：2A(g)＋3B(g)??4C(g)＋D(g)，已知起始浓度c(A)＝4 mol·L－1，c(B)＝3 mol·L－1，C、D浓度均等于0，反应开始2 s后达到平衡状态，此时D的平衡浓度为0.5 mol·L－1，则下列说法不正确的是(　　)
A．v(C)＝1 mol·L－1·s－1
B．C的平衡浓度为4 mol·L－1
C．A的转化率为25%
D．B的平衡浓度为1.5 mol·L－1
答案　B


3、重庆市杨家坪中学2025-2026学年高一(上)第二次月考数学答案