学者余秋雨说“废墟是昨天派往今天的使者，废墟让我们把地理读成了历史。”站在下图“废墟”上，我们可以读到的“历史”是(   )

    Come and have a look at my photo.

    There are five people in my family. They are my grandpa, my grandma, my father, my mother and I.

    My father is a driver. He works in his car. My mother is a teacher, she works in the school. I'm a pupil. I study hard. My grandpa and grandma don't work. They are old, but they can cook meals for us.

     I love them and they love me, too.

根据短文内容，判断正误。

如图是发现某种粒子的实验，这种新粒子的原子核符号是什么？它是由谁预言了它的存在？并由查德威克通过实验发现的．

下列对盐酸的叙述正确的是（　　）