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6、[九师联盟]2026届9月高三开学考政治LN试题


2、[九师联盟]2026届9月高三开学考生物LN试题


And then you'll say, "My, you were right!
That three-sneeze curse is quite the sight!"
What's that You're waiting for the third
I know you think my nose absurd (可笑的).
And you're not wrong to think it's strange;
I've tried my best; my nose won't change.
But this is odd -- the third's delayed (推迟了).


①An emergency is a sudden situation that can harm someone's health,safety,or property. Knowing how to handle it can make a big difference. The key is to stay calm and act wisely.
②First,don't panic.If you feel scared or confused,stop and take deep breaths.This helps you think clearly instead of acting out of fear.Staying calm also helps others around you feel less afraid.Tell yourself you can manage the situation.Look around carefully to understand what's happening before you do anything.
③Next,decide what kind of emergency it is.Is someone hurt,like from a car accident or a fall Or is it something like a fire or a flood that could damage a building For example,if someone is bleeding a lot or can't breathe,it's a medical emergency.If it's a fire or a chemical spill,it might be a danger to everyone nearby.Knowing this helps you choose the right action.
④Then,call for help.In the USA,dial 911.In other places,use the local emergency number.Tell the person on the phone where you are and what's wrong.Answer their questions clearly—they need information to send the right help fast.Even if you can't talk much,stay on the line so they can find you.
⑤If it's safe,help others.If someone is in danger,guide them to a safe place.But it's too risky,wait for trained people to step in.If someone is hurt and awake,talk to him.Ask their name or tell them help is coming to keep them calm.
⑥Emergencies can change quickly,so keep watching the situation.By staying calm and acting smart,you can help yourself and others stay safe.
( )1.What does the underlined word“it”in Paragraph 1 refer to


6、[九师联盟]2026届9月高三开学考英语LN试题


5、[九师联盟]2026届9月高三开学考政治LN试题


5、[九师联盟]2026届9月高三开学考数学LN试题


6、[九师联盟]2026届9月高三开学考数学LN试题


6、[九师联盟]2026届9月高三开学考语文LN试题


6、[九师联盟]2026届9月高三开学考英语LN试题


C．Ⅱ中所有碳原子共平面
D．Ⅲ不能发生消去反应
14.高分子材料在生产生活中应用广泛。下列说法错误的是(　　)
A．中科院首创用CO2合成可降解塑料聚二氧化碳，聚二氧化碳塑料是通过加聚反应制得的
B．高分子材料蚕丝、尼龙、棉花均为天然纤维，其中蚕丝的主要成分为蛋白质
C．有机玻璃(聚甲基丙烯酸甲酯)的单体能发生加成反应、取代反应、氧化反应
D．医用口罩所使用的熔喷布为聚丙烯，聚丙烯属于合成高分子材料


B．由图可知，H2Y的二级电离常数Ka2(H2Y)数量级为10－10
C．从a点到b点过程中，水的电离程度先增大后减小
D．NaHY溶液中的离子浓度大小为c(Na＋)>c(HY－)>c(OH－)>c(H＋)>c(Y2－)
【例9】常温下，向20.00 mL 0.100 0 mol·L－1的CH3COOH溶液中滴加0.100 0 mol·L－1的NaOH溶液，溶液中，lg 随pH的变化关系如图所示(取lg 5＝0.7)。
下列说法正确的是(　　)
A．常温下，CH3COOH的电离常数为10－4
B．当溶液的pH＝7时，消耗NaOH溶液20.00 mL


3、[九师联盟]2026届9月高三开学考化学LN答案