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本文从以下几个角度介绍。

    5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    Tiny, pink and quiet, with eyes closed ...
    Xiwang was just 100 grams when I first saw her. Her birth brought much happiness to us. We named her Xiwang because it means "hope".
    In the beginning, Xiwang couldn't see, hear or even move. We gave her round-the-clock
    care. At six months old, she began to eat bamboo. Half a year later, she weighed over 35 kilograms. There is nothing more satisfying than seeing Xiwang grow into a big ball of fur.
    When she was 20months old, she learnt to look after herself.
    Xiwang has a happy life here. However, giant pandas in the wild face serious problems. They are very special animals. It is difficult for them to have babies. Even if baby pandas are born, they may easily get sick and die. Also, they live mainly on bamboo, but the bamboo forests are becoming smaller and smaller. As a result, pandas may not have a place to live or enough food to eat.
    Luckily, the government has taken action. There are laws to protect giant pandas and more nature reserves for them to live in, Moreover, scientists are working hard to help pandas have more babies. Thanks to all the efforts, the number of giant pandas is increasing.


    This way, bacteria cannot be passed on to you from your pet easily.
    141．A．children B．friends C．members D．pets
    142．A．happy B．healthy C．sick D．unlucky
    143．A．from B．for C．with D．like
    144．A．let B．bring C．get D．have
    145．A．make B．find C．build D．see
    146．A．walk B．move C．catch D．cut


    3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    6、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    4、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)试题


    4．C
    【详解】A、常温下大多数金属都是固体，但汞是液体，选项说法不正确；
    B、用武德合金做保险丝是因熔点低，选项说法不正确；
    C、合金的硬度比组分金属的硬度大，所以黄铜的硬度大于纯铜，选项说法正确；
    D、钛和钛合金的抗腐蚀性能非常好，即使把它们放在海水中数年，取出后仍光亮如初，所以钛合金的耐腐蚀性比不锈钢的好，选项说法不正确。
    故选C。
    5．C


    2.不能用勒夏特列原理来解释的选项是
    D.提高催化剂的活性能减小反应热
    A.氨水应密闭保存，放显在低温处
    7.已知2NO2亡NO4,将一定量的NO2充入注射器中后封口，如图是在拉伸和压缩注射器
    B.用排饱和食盐水的方法收集氯气
    的过程中气体透光率随时间的变化（气体颜色越深，透光率越小）。下列说法正确的是
    C.对H(g+H(g)2HI(g)平衔体系加压，混合气体颜色加深


    3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3数学(人教版)答案