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2、柳州市2026届高三第一次模拟考试[柳州一模]生物试题


5.A.offices B.stores C.homes
6.A.it B.him C.them
7.A.asked B.offered C.made
8.A.Unless B.Although C.If
9.A.on B.between C.among
10.A.give up B.put up C.set up
What will the future world be like Many people are glad to give their 11 . Here are two imaginations about the world of tomorrow. When people talk about the future, we like to think that we’ll have our own personal flying car. We would fly at 480 kilometers per hour, avoiding traffic lights, 12 roads and speeding tickets. However, some people point to the disadvantages of flying cars. One big problem is: what will happen if the flying cars 13 Then there will be problems with traffic control. Also, if they become popular, there will surely be too much air traffic. So it seems that flying cars will face more than a few problems if they are to get off the ground! Imagine you have your own Ironman 14 . Several companies are trying to build a practical robot “exoskeleton”. This is a suit of robot arms and legs which follows your movement. It will 15 the wearer to lift heavy objects, walk a long way and even punch through walls! It is 16 in many ways, especially for people with disabilities. This suit might help people to walk again after 17 or injury (受伤). But the disadvantage at the moment is the 18 . Even a simple suit can cost hundreds of thousands of pounds. Another problem is battery life. A suit like this needs a lot of 19 and batteries only last about 15 minutes at the moment. One other problem is that a badly programmed robot suit could harm the wearer. You wouldn’t want your robot leg or arm bending (弯曲) suit could 20 the wearer if he wears it the wrong way.


高考英语一轮复习 记叙文阅读理解
一.阅读理解(共20小题)
1.(2025春?天水期末) When Margaret Elenis was first diagnosed with stage 4 breast cancer,she was extremely upset.It was hard for her to look at her 2﹣year﹣old son.She didn't want him to live with the heartbreak of missing her.So she decided to fight.
Her dream and experience inspired her to help families improve their health,leading her to start her own business with her sister Nina.This unique business combines a modern indoor play space with an organic café,promoting healthy lifestyles for families.Currently,the company operates two locations,creating opportunities for families to enjoy healthy fun together.
Margaret's cancer journey is a daily struggle.She schedules her treatment around her busy routine,ensuring both business and family needs are met."Every day is about surviving,"she says.Despite the challenges,she remains committed to being a mom and a business owner."I fight hard to be a good mom,fight to heal,and fight to grow my business,"she explains.She squeezes in five hours of treatment daily while managing two store locations and caring for her family.
Margaret's support system is crucial.Her sister Nina is her partner in business and life,allowing her to focus on healing.Her husband,parents,and dedicated team help her manage the demands of her health and business.Dr Amy Morris,a cancer recovery expert,notes that cancer treatment and its side effects are long﹣lasting,making Margaret's balancing act even more remarkable.
Margaret's advice to other moms facing health challenges is to cherish each day."If you have today,you have the world!"she says.She remains positive about the future,hoping to see her children grow up and expand her business."The possibilities are endless,"she says.Margaret's journey has taught her to appreciate every moment and prioritize health above all else."I wouldn't take this part of my life away,"she shares."This journey has shaped who I am,and it's really shown me the potential that the future has."


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27.【答案】小 外焰 水雾 澄清的石灰水变浑浊 水 二氧化碳 物理 化学 新物质
【解析】解:由于蜡烛浮在水面上,说明石蜡的密度比水小;
由于温度越高,火柴梗易被炭化.所以,看到火柴梗的处最先变黑,说明蜡烛火焰的外焰温度最高;
由题意可知,由烧杯内壁出现水雾,说明了蜡烛燃烧生成了水;由澄清的石灰水变浑浊,说明了蜡烛燃烧生成二氧化碳;
蜡烛受热熔化是状态发生改变,属于物理变化,而蜡烛燃烧是生成水和二氧化碳属于化学变化;这两种变化的根本区别是变化前后是否有新物质生成;
、反复实验,并观察是否有相同的实验现象,就是进行对比实验,做法正确.不合题意;
B、查找蜡烛成分资料,探究黑色物质成分,符合科学探究的过程,做法正确,不合题意;


【分析】根据仪器形状认名称;依据高锰酸钾制氧的注意事项(试管倾斜 )、反应原理写表达式;据制取气体的反应物状态和条件选发生装置,气体性质选收集装置;利用元素质量分数计算氧元素质量;通过反应速率选合适供氧剂。
20.【答案】(1)138
(2)14:1:8
【知识点】化学式的相关计算
【解析】【解答】(1)水杨酸的化学式为 C7H6O3 ,所以水杨酸的相对分子质量=12×7+1×6+16×3=138;
故答案为:138;
(2)水杨酸中C、H、O三种元素的质量比=12×7:1×6:16×3= 14:1:8 。


3、柳州市2026届高三第一次模拟考试[柳州一模]化学答案