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    1、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    6、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    Use paper wisely. We can save trees by using paper in a right way. What can we do Use both sides of paper when doing homework. Borrow books to read when you needn’t buy them. Never throw old books away but be kind to give them to others who need them. Instead of paper towels use cloth towels.
    Plant trees. To save trees, it’s a great idea to plant them. Spring is the best season to plant trees. If everyone around us does it, millions of trees will appear and make our world become green and beautiful.
    Tell people to understand the importance of trees and help save trees. Try to write letters to people and ask them to use as little paper as they can.
    47．How many ways are there to use paper wisely
    A．Five. B．Four. C．Three. D．Two
    48．How can we save trees
    A．We can use both sides of paper when doing homework.


    （四）听短文，选择最佳答案（共5小题，每小题1分，共5分）
    你将听到一篇短文，请根据短文内容，选出每个问题的最佳答案，并在答题卡上将选定答案的字母标号涂黑。短文读两遍。
    21. Where did Kate spend her holiday
    A. In London. B. In Paris. C. In New York.
    22. When did Kate’s holiday start
    A. On June 6th. B. On July 6th. C. On June 16th.
    23. How was the weather when Kate got there


    3、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    4、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    3、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    6、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    1、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    3、太原市2024-2025第二学期高一年级期中学业诊断数学试题


    四、计算题(共1小题,共9分)
    23.(9分)钙是人体中的常量元素,缺钙时可服用补钙剂来增加摄入量。为测定某种钙片中碳酸钙的含量,某同学取10片钙片(每片2 g)研碎后放于烧杯中,向其中加入一定浓度的稀盐酸至不再产生气泡,过滤后得到不溶物的质量为10 g,再向滤液中加入55.4 g水,此时溶液中溶质的质量分数为10%(钙片中主要成分为碳酸钙,假设其他成分不溶于水,也不与盐酸反应)。计算:
    (1)该种钙片中碳酸钙的质量分数。
    (2)加入稀盐酸的质量。
    答案:解:(1)碳酸钙的质量为10×2 g-10 g=10 g,该种钙片中碳酸钙的质量分数为×100%=50%
    (2)设生成氯化钙的质量为x,生成二氧化碳的质量为y。
    CaCO3+2HClCaCl2+H2O+CO2↑


    A.精氨酸中含有一个氧分子


    3、太原市2024-2025第二学期高一年级期中学业诊断数学答案