阅读理解

       Computers are useful machines．They can help people a lot in their daily life．For example，they can help people to save much time to do much work，and they can help people to work out many problems easily．Our country asks everyone to learn to use computers before the twenty-first century，except the old people．  21·cn·jy·com

      Today more and more families own computers．Parents buy computers for their children．They hope computers can help them improve their studies in school．Yet，many of their children use computers to play games，to watch videos or to chat．Computers can not help children to study but make them fall behind．So computers are locked in boxes by parents．

        In some other countries，even some scientists also hate computers．They say computers let millions of people lose their jobs or bring them a lot of trouble．Will computers really bring trouble to people or can they bring people happiness? It will be decided by today's students themselves!

锌与很稀的硝酸反应生成硝酸锌、硝酸铵和水。当生成1 mol硝酸锌时，被还原的硝酸的物质的量为                                              （   ）

作为全球经济体中的重要成员，中美担负着全球经济健康发展的共同责任。这表明（  ）
①我国在国际社会中履行着大国的责任
②我国在世界上扮演着越来越重要的角色
③我国经济是世界经济的重要组成部分
④我国对世界的和平与发展作用不大 

阅读理解

    Do you have an English name? I have noticed (注意到) one thing in China: lots of people have uncommon(不常见) English names.

    One of my Chinese friends calls herself Big Bird, like the character(角色) from the children's TV show Sesame Street(《芝麻街》). Another one of my friends is an English teacher. She had students with the names like Tomato and Potato. There were also two girls named Echo. Before I came to China, I had never met anyone with these names.

    People choose these strange names for different reasons. Sometimes they copy the names from someone famous. Other times, they want names that have the same meaning as their Chinese name.

    But having an uncommon English name isn't a big deal, is it? It can be fun sometimes. I once heard about a girl named Shmily. It stands for “see how much I love you”. It is my favorite strange English name.

如图为玉米和菜豆的种子，有关种子的叙述正确的是（　　）