西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题于2025-05-16发布，目前免费查试卷答案网站已经汇总了西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题的各科答案和试卷，更多试卷答案请关注免费查试卷答案网站。

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2、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


3、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


I still keep the old green coat today, a reminder of that hard but warm day. When I see it, I think about how far I’ve come. I often donate money to the charitable organization and volunteer at local shelters, sharing my story with those struggling people. I tell them about that memorable Christmas, about the coat with its torn shoulder, and about the small act of kindness that changed my life. I say to them, “No matter how dark it seems, there’s always a glimmer of hope.” When I speak, I see their eyes light up with the same hope that once warmed my heart on that freezing day.

Fink was OK at first but as the hours went on his head started hurting. Fink then went to Cook Children's hospital. "They took me straight back to surgery and they told my mom and dad, ‘Hey, he may not make it,’” he said. X-rays found a skull fracture (颅骨骨折) and bleeding in his brain. He needed six screws (螺钉) to relieve the pressure, screws that will stay inside his head for the rest of his life.
He spent a few weeks at home recovering but wanted to run again. Not sure if he was up to it, his coaches put him on the junior varsity team at first.
"It's the craziest and the scariest thing I've had to deal with in my coaching career,” track coach Mike Pinkerton said of the incident. "He said, ‘Coach, I'm getting my spot back!’” Pinkerton said. At the junior varsity meet, Fink came in first. He then got his varsity spot back. “I felt like, ‘OK I can do this again. I'm back. I'm ready to run again,’” Fink said.
At a regional meet Monday in Lubbock, Fink was the fastest ninth-grader in the entire area. The state competition is in Round Rock next month, and Fink will be there with his team. "There's no excuse. You have to go through life and try your hardest with everything,” he said. “Never stop trying and just run.”
51. When did the accident happen
A. When Fink was in third grade. B. While Fink was playing golf at the course.
C. Before Fink saw the sky. D. While Fink was training.


5、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


2、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


5、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


2、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


2、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


5、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学试题


故选D。
4．答案：C
解析：浓硝酸见光会分解，要保存在棕色试剂瓶中，A项错误：常温下，铝与浓硝酸发生钝化，所以浓硝酸可以用铝制容器储存，B项错误：酸性溶液中硝酸根离子有强氧化性，与亚铁离子发生氧化还原反应生成一氧化氮，一氧化氮在试管口与氧气反应生成二氧化氮，可在试管口观察到红棕色气体，C项正确：稀硝酸与金属反应时，稀硝酸被还原为一氧化氮，反应较慢，浓硝酸被还原为二氧化氮，反应较快，所以稀硝酸的氧化性比浓硝酸弱，D项错误。
5．答案：A
解析：A.溶解操作中要根据粗盐的质量和溶解度来确定烧杯和量筒的规格，A正确；
B.步骤②~④中：必须要在加完溶液之后再加入，作用是除去和过量的Ba2+，NaOH的顺序没有要求，B错误；
C.步骤⑥加适量HCl除去③加入的过量的和④加入的过量的，加入的盐酸是过量的，溶液呈酸性，C错误；


【解析】A．根据图中已知的两个Ti原子的坐标(0,0,0)和(1,1,1)，在体心位置，分数坐标为，故A正确；
B．根据晶胞结构示意图，氧离子构成正八面体形，故B正确；
C．和之间的距离为体对角线的，即为，故C错误；
D．根据晶胞结构示意图，晶胞中个数为1，O2-个数为=3，的个数为=，晶胞中含一个，晶胞的质量为，晶胞的体积为，晶体的密度为==，故D正确。
答案选C。
4．下图是氮化镓的一种晶体结构，表示阿伏加德罗常数的值。下列说法正确的是
A．每个原子周围距离最近的原子数目为4


3、西南名校联盟2025届“3+3+3”高考备考诊断性联考(四)4数学答案