在化学反应2A+B₂=2AB中，A 与B₂反应的质量关系如右图所示，若6g A和8g B₂充分反应，则生成AB的质量为（）

下列说法正确的有几种
⑴糖原代谢的最终产物是葡萄糖
⑵不能选用植物细胞观察线粒体，因为有颜色干扰
⑶细胞间的识别与细胞膜上的载体有密切的关系
⑷溶酶体能合成多种水解酶，分解衰老、损伤的细胞器
⑸参与光合作用的色素只分布在类囊体的薄膜上
⑹寄主细胞因病毒的复制释放而死亡属于细胞凋亡
⑺如果细胞内进行了mRNA的合成不能说明细胞已经发生分化了

阅读下文，回答相关问题。
        临放寒假的前一天，班里每人发一套寒假课外读物。查老师在发书前告诉大家，有一套书是破损的，他不知应该把那套书分给谁。
       一时间，班内沸沸扬扬，有的建议摸彩；有的建议每人补贴五分钱给受损失的人：那个善于运算的陈应达还计算什么概率；有的女生则大喊：上帝保佑。贾里听烦了，霍地一下站起来：“分给我吧。”
        其实，那套书只是书脊上擦破了一点，属于轻伤，用个纸一包就解决了——这值得大惊小怪地出谋划策吗？
贾里没想到区区小事却引起大轰动，先是学校广播站立刻广播了这则小故事，紧接着，下午的全校师生联谊会上他被大家选为“今日明星”。贾里弄不懂，为什么平日他那些可歌可泣的行为不被人重视，而一些不值得一提的小事却被当成了不起的大事。
         “看来，我是个普通人，只配做些鸡毛蒜皮的小事。”贾里对爸爸说。
        爸爸哈哈一笑：“不做小事的人，怎么干得成大事！”
        不过，父亲又说贾里长大了。至于长大或是不长大贾里不在意，反正，他尝到了一种很特别的滋味，甜酸苦辣全有。

    Every day in China, about 200 million children go to school. Many of them take school buses to school and back home. Most of the time, the school buses are very safe for them. But sometimes they are also dangerous.

    Several years ago, a serious accident happened to a nine – seat minibus in November in Gansu. There were 62 children inside, and 21 of them died.

    What should we do to keep us safe on the road? First, we should wait for the school bus on time at the right place when we are going to school or coming back home. Second, we shouldn't run or fight on the bus when it is going. Third, we mustn't try to get off when it is moving. Last, don't get on the bus if it is overloaded(超载).

    Our government(政府)also makes rules for school buses. Under the new rules, school buses have a speed limit of 80km per(每)hour on highways and 60km per hour on normal roads. While on the road, other cars must let school buses go first.

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