1.简答题- (共1题)
（1）NH4MgPO4中含有________种元素，其相对分子质量是________________。
（2）NH4MgPO4中Mg元素的质量分数是________________（精确到0.1%）。
（3）现要配制溶质量分数为2%的MgSO4溶液500kg进行喷施，需25% MgSO4溶液的质量是___________kg。
2.计算题- (共2题)
根据所得数据计算：
（1）500g该废水中硫酸铜的质量 _______________。
（2）该废水中硫酸的溶质质量分数_______________。
求：①反应中生成沉淀的质量为多少？
②该工厂排放的废水中所含硫酸的质量分数为多少？
3.选择题- (共13题)
Reading good books is one of the greatest pleasures in life. It 1 our happiness when we are cheerful, and lessens our 2 when we are sad. A good book may absorb our attention so 3 that for the time being we forget our 4.
Whatever may be our main purpose in reading, good books should never fail to give us 5. With a good book in our hands we will never be 6. Whether the characters in the book are taken from real life or are purely 7, they may become our companions and make us laugh. The people we meet in books may 8 us either because they are similar to our close friends or because they present 9 types whom we are glad to welcome as new acquaintances. Our human friends sometimes 10 us, but the friends we make in books are always respect us. By turning the pages we can 11 them without any fear of hurting their feelings, When our human friends 12 us, good books are always there to give us sympathy and encouragement.
One of the most valuable gifts from books is 13. Few of us can travel far from home.14 all of us can lead varied lives through the pages of book. When we wish to 15 from the dull realities of everyday life, a book will help us when 16 else can. To travel by book we don't have to 17 and save a lot of money. Through books we may gel the thrill of adventure without 18. We can climb high mountains or cross the hoi sands of the desert,19, through books the whole world is ours for the asking. The 20 of our literary experiences are almost unlimited.
Reading good books is one of the greatest pleasures in life. It 1 our happiness when we are cheerful, and lessens our 2 when we are sad. A good book may absorb our attention so 3 that for the time being we forget our 4.
Whatever may be our main purpose in reading, good books should never fail to give us 5. With a good book in our hands we will never be 6. Whether the characters in the book are taken from real life or are purely 7, they may become our companions and make us laugh. The people we meet in books may 8 us either because they are similar to our close friends or because they present 9 types whom we are glad to welcome as new acquaintances. Our human friends sometimes 10 us, but the friends we make in books are always respect us. By turning the pages we can 11 them without any fear of hurting their feelings, When our human friends 12 us, good books are always there to give us sympathy and encouragement.
One of the most valuable gifts from books is 13. Few of us can travel far from home.14 all of us can lead varied lives through the pages of book. When we wish to 15 from the dull realities of everyday life, a book will help us when 16 else can. To travel by book we don't have to 17 and save a lot of money. Through books we may gel the thrill of adventure without 18. We can climb high mountains or cross the hoi sands of the desert,19, through books the whole world is ours for the asking. The 20 of our literary experiences are almost unlimited.
阅读唐代诗人杨巨源的《城东早春》然后回答问题。
城东早春 杨巨源
诗家①清景在新春，绿柳才黄半未匀。
若待上林②花似锦，出门俱是看花人。
【注释】①诗家：诗人。②上林：古代皇家园林。
“十·一”黄金周期间，某风景区在7天假期中每天旅游的人数变化如下表（正数表示比前一天多的人数，负数表示比前一天少的人数）
（1）请判断七天内游客人数最多的是哪天？最少的是哪天？它们相差多少万人？
（2）若9月30日的游客人数为2万人，求这7天的游客总人数是多少万人？
“十·一”黄金周期间，某风景区在7天假期中每天旅游的人数变化如下表（正数表示比前一天多的人数，负数表示比前一天少的人数）
（1）请判断七天内游客人数最多的是哪天？最少的是哪天？它们相差多少万人？
（2）若9月30日的游客人数为2万人，求这7天的游客总人数是多少万人？
“十·一”黄金周期间，某风景区在7天假期中每天旅游的人数变化如下表（正数表示比前一天多的人数，负数表示比前一天少的人数）
（1）请判断七天内游客人数最多的是哪天？最少的是哪天？它们相差多少万人？
（2）若9月30日的游客人数为2万人，求这7天的游客总人数是多少万人？
Look, the Maths teacher with his students _________on the grass to have a good rest at present.
4.单选题- (共4题)
A. B都为固态物质)，判断下列说法中正确的是( )
A．t1℃时，A和B饱和溶液的质量分数都为30%
B. t3℃时，A的溶解度比B大，故A溶液的质量分数也一定比B溶液大
C. B的浓溶液的质量分数一定比A的稀溶液大
D. 把c点对应A的溶液降温至t2℃可得A的饱和溶液，继续降温可析出A晶体
| A．常温下密闭容器中硝酸钾稀溶液升温10℃ |
| B．氯化铁溶液中加入少量生石灰 |
| C．硫酸锌溶液中加入少量铜粉 |
| D．稀释硫酸钠溶液 |
（1）常温下CO2气体的密度为2.0g/L，则上述反应放出气体的质量为 g。
（2）如石灰石中的杂质均不溶于水且不与盐酸反应，计算石灰石中CaCO3的质量分数和反应所得溶液中溶质的质量分数（计算最终结果保留1位小数）。
5.填空题- (共7题)
（1）在此温度下200g水最多可溶解 克NaCl
（2）2010g此温度下的饱和溶液里溶质的质量分数为 %（精确到0.1%）
（1）用NaCl配制100ml 0.9％医用的生理盐水（密度约为1g/ cm3），需要NaCl的质量为 g。
（2）由图可知，t1℃时，硝酸钾溶解度 氯化钠的溶解度（填“＞”，“＜”或“＝”）；从氯化钠和硝酸钾饱和溶液中提取硝酸钾，应采用下列方法中的 （填写编号）。
a．冷却结晶 b．蒸发溶剂 c．过滤
第一步：准确称量8．4g食品级小苏打粉末；第二步：将第一步所称粉末配成100g溶液；
第三步：将第二步所得溶液取出10g，再加水配制成100g溶液即得到治疗胃酸过多的小苏打水(密度为1.0g/mL)。
请回答下列问题：
(1)第—步用到的主要仪器是 ；第二步使用的玻璃仪器有 （至少写两种）；
(2)第三步配制所得的小苏打水中NaHCO3的质量分数是 ；
(3)胃酸过多者在医生的指导下，每次喝50mL第三步配制所得的小苏打水，一天两次，则一天可反应掉胃液中的HCl g。
（1）要把该浓硫酸稀释为100g19.6%的稀硫酸，需要这种浓硫酸的质量 g。
（2）稀释浓硫酸时，一定要把 沿器壁慢慢注入 里，并不断搅拌。
请回答下列问题：
(1)物质A是常见的碱，写出A的化学式：______。
(2)写出反应①的化学方程式：___________________。
(3)说出NaHC03在医疗上的一种用途：______________ 。
(4)反应③、④、⑤、⑥能够进行的原因是_______________。
(5)实验室配制200g 8％的NaCl溶液，需要水的质量是___________g，配制过程中为了加快NaCl的溶解，可以采取的措施是_____________。
6.实验题- (共1题)
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【1】题量占比
简答题:(1道)
计算题:(2道)
选择题:(13道)
单选题:(4道)
填空题:(7道)
实验题:(1道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：5
5星难题：0
6星难题：6
7星难题：0
8星难题：1
9星难题：0