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试题答案

本文从以下几个角度介绍。

    1、毕节市2024高三第二次诊断考试
    2、2024年毕节市高三适应性考试
    3、毕节市2024高三诊断性考试三
    4、毕节市2024年高三诊断性考试
    5、毕节市高三2024第三次诊断考试
    6、毕节市高三2024第三次诊断考试
    7、毕节市2024高三第二次诊断考试
    8、毕节市2024年高三诊断性考试二
    9、2024毕节市高三第二次诊断

5、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)地理试题


3、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)化学试题


Afel found out that the next Winter Olympics would be in Beijing,in 2022."Perfect,"he thought."Enough
time for me to become an excellent skier."
"But there's no snow here!"people told him."Where are you going to ski ""How will you go to the
Olympics "People asked him."Our country doesn't even have a skiing team."But Afel didn't 7.He made
himself a pair of skis from two pieces of wood.He tied them to his feet and practised skiing8 two sticks in
his hands.He practised again and again until he could move quite quickly across the sand.He tried to fly down
the hills like the people on TV,but he couldn't.


B
If you are comfortable showing off your moves on the dance floor, you may know what to do if someone asks you to join them in a twist , a jive , a hustle , a pogo or even a bit of moshing ! But if they ask you to join them for a street dance, which moves would you make Of course, you might be a little confused. The truth is, street dance is a mix of several forms of dance, coming from different periods of time and even different countries.
The name “street dance” is connected to those forms of dance which are popular in the streets, parks, clubs and alleyways of cities like London and New York. But it covers everything from break dancing to body popping , body locking and house dancing.
There are very few rules. Street dance is often improvised and done among friends while listening to a mobile music player. It is open to anyone of any age, anywhere and any time.
Because it is a social activity, it has provided many young people, especially those in poorer city areas with a strong gang culture, helping these young people getting into trouble. For example, the street dance group-Diversity, was formed when a group of brothers and friends from East London and Essex got together. The group has achieved fame because of a popular television talent show-Britain’s Got Talent. For others, the inspiration may be a local street-dance club led by a professional instructor , or a local group of friends who get together just for fun.
51．(2分)Where could you probably read this passage
A．Nature magazines. B．Traveling websites.


5、毕节市2025届高三年级高考第三次适应性 (毕节三诊)生物试题


1、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)英语试题


6、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)英语试题


1、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)生物试题


5、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)数学试题


5、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)地理试题


A．若Cl2、(SCN)2发生泄漏，均可喷洒石灰水进行处理
B．(SCN)2+2NaOH＝NaSCN+NaSCNO+H2O是氧化还原反应
C．Cl2与KSCN溶液发生反应的离子方程式为Cl2+2SCN-＝(SCN)2+2Cl-
D．(SCN)2可以与KBr溶液反应:(SCN)2+2KBr＝2KSCN+Br2
参考答案
一、超重氢—氚(T)(10分)
1． AD (2分,对一个1分,错选不得分) 2． D(2分) 3． C(2分)


(4)铁片、硫酸铜溶液或铜片、硫酸亚铁溶液（合理即可）
(5)铜和银
【详解】（1）由于金属易与空其中的氧气反应在其表面形成了氧化物的薄膜，所以实验前用砂纸打磨金属的目的是除去金属表面的氧化物和污垢；
（2）B试管中铜与硝酸银反应生成硝酸铜和银，所以一段时间后，观察到铜片表面有银白色物质析出，溶液由无色变成蓝色，该反应的化学方程式为：；该反应是一种单质和一种化合物反应生成另一种单质和另一种化合物，属于置换反应；
（3）锌和铁都与盐酸反应，锌反应的速率比铁快，说明锌在铁的前面，所以甲同学认为通过实验A和C可比较锌和铁的金属活动性，他依据的实验现象是：锌片和铁片表面均产生气泡，且C中锌片表面产生气泡的速率比A中铁片快；
（4）A试管中铁能与稀盐酸反应，说明金属活动性Fe＞H；B试管中铜能与硝酸银反应，说明金属活动性Cu＞Ag；C试管中锌能与稀盐酸反应，说明金属活动性Zn＞H，A、C对比，锌片表面产生气泡的速率比铁片快，说明金属活动性Zn＞Fe；故通过A、B、C，能说明Zn＞Fe＞H，Cu＞Ag；但不能说明铁和铜的活动性，故可以通过金属与酸或金属与盐溶液的反应来证明铁和铜的活动性强弱，所以可选用的金属X是Fe，Y是CuSO4溶液（铁能与硫酸铜反应，说明金属活动性Fe＞Cu）；或X是铜片，Y是硫酸亚铁溶液（铜不能与硫酸亚铁溶液，说明金属活动性Fe＞Cu）或X是Cu，Y是稀盐酸（铜不能与稀盐酸反应，说明金属活动性H＞Cu）；可说明四种物质的金属活动性顺序为Zn＞Fe＞Cu＞Ag；
（5）根据金属活动性顺序Zn＞H＞Cu＞Ag，把一定量的锌粒加入硫酸铜和硝酸银的混合溶液中，锌先与硝酸银反应生成硝酸锌和银，待硝酸银反应完全，若锌有剩余，锌会与硝酸铜反应生成硝酸锌和铜；充分反应一段时间后，过滤，发现滤液呈无色，说明滤液中一定不含有硝酸铜（硝酸铜溶液呈蓝色），即硝酸银和硝酸铜反应完全，即硝酸银中的银和硝酸铜中的铜已被完全置换出来，无法判断锌是否反应完全，故滤渣中一定含有银和铜，可能含有锌。


3、毕节市2025届高三年级高考第三次适应性考试(毕节三诊)生物答案