足量铜与一定量浓硝酸反应，得到硝酸铜溶液和NO₂、N₂O₄、NO的混合气体，这些气体与1.68L O₂（标准状况）混合后通入水中，所有气体完全被水吸收生成硝酸．若向所得硝酸铜溶液中加入5mol•L^﹣1 NaOH溶液至Cu²⁺恰好完全沉淀，则消耗NaOH溶液的体积是（   ）

阅读下面短文，把A---D四个句子填入文中空缺处，使短文内容完整、正确。

    I'm Lin Tao. I live in a beautiful apartment.____ There are eight floors in the building and there is a parking lot near it. We park our cars there.
    Our apartment is in the countrysides. ____  It's four kilometers from the center of the city. My father works in the city, and he goes to work by car every day.
____  One is for my parents. One is me and another for my brother. We don't have a garden, but there is a small balcony(阳台).

____ I often water the flowers with my brother. Our apartment is small but we are very happy in it. I love my home.
____ What is the best title （标题）for the passage?
 A. My family      B. My home       C.  My father

青春期的女生多吃水果不吃饭，既可以保证营养，又可以减肥．　

某反应的微观示意图如下，有关说法正确的是（    ）

重水（D₂O）是重要的核工业原料，下列说法错误的是（ ）