研究表明，同一突触小体中可能存在两种和两种以上的递质，此现象称为递质共存现象。下列说法中不正确的是

从居民等级的划分看，雅典民主仅为拥有公民权的一些特权人物所享有；但从公民内部享有的权利看，全体公民都有权参加公民大会，都可担任五百人会议和陪审法庭成员以及其他民选公职。这反映出雅典民主的特点是（    ）

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案．

    One night I saw something on the news that made me sad．It was1a group of homeless(无家可归的)people sleeping outside in the cold．

    So I decided to start a2to raise many for the homeless．I called it the Rock Club,At the beginning,there were only five members in it，3that quickly grew to about twenty．I didn't have to ask anyone if they wanted to be a4．In fact，they came up to me and asked me if they could5the club!

    We spent all of our free time on rock painting．We painted animals,flowers and even the names of sports teams on our rocks．We'd go around the school to6people who would buy them．By Christmas，we had raised thirty．three dollars and then we gave the money to a homeless shelter(收容所)in town．We all felt7that we could do something to help the homeless．

    A few days later,a newspaper reporter(记者)came to our school to8with us about our club and took a photo of us．The photo and article(文章) 9in the newspaper the next day．Later,10school,joined by three other schools，started a project for kids to help homeless shelters．

    Something as simple(简单的)as some painted rocks and a few caring kids made me know that I don't need much to make a difference．

小竹将质量为120g的物体放入盛满水的溢水杯中，当物体静止时，溢水杯中溢出了100cm³的水，则物体（g取10N/kg）（   ）

阅读短文，回答问题。
七子之歌（节选）
澳门
你可知“妈港”不是我的真名姓？
我离开你太久了，母亲！
但是他们掳（lǔ）去的是我的肉体，
你依然保管着我内心的灵魂。
那三百年来梦寐不忘的生母啊！
请叫儿的乳名，叫我一声“澳门”！
母亲！我要回来，母亲！
香港
我好比凤阁阶前守夜的黄豹，
母亲呀，我身份虽微，地位险要。
如今狞恶的海狮扑在我身上，
啖（dàn）着我的骨肉，嗍着我的脂膏；
母亲呀，我哭泣号啕，呼你不应。
母亲呀，快让我躲入你的怀抱！
母亲！我要回来，母亲！
台湾
我们是东海捧出的珍珠一串，
琉球是我的群弟，我就是台湾。
我胸中还氤氲着郑氏的英魂，
精忠的赤血点染了我的家传。
母亲，酷炎的夏日要晒死我了，
赐我个号令，我还能背城一战。
母亲！我要回来，母亲！