用所学的生物知识回答下列问题：

（1）大米的主要成分是淀粉，在人体的口腔内经初步消化后，最终在____ 内以葡萄糖的形式被吸入血液．

（2）葡萄糖随血液循环到达心脏的右心房，经过____ 循环再回到心脏的____ 、左心室，最后进入____ 动脉

（3）随着主动脉，部分血液流到肾脏，血液中的部分葡萄糖经过____ 的____ 作用进入原尿，在____ 处它又被重新吸收回到了血液中．

（4）葡萄糖随着血液循环最终到达组织细胞处，在那里它被分解成____和____ ．同时释放出____ ．这样，大米的重要使命就完成了．

（5）环境中众多的病原体不易伤害我们，首先是因为我们的皮肤具有保护功能，抵挡病原体的侵入，这属于第____ 道防线．

（6）若我们的皮肤不慎划伤，在伤口上涂抹适量唾液可暂时起到杀菌消炎作用，原因是唾液中含有____ ，这属于人体的第____ 道防线．

（7）从预防传染病流行的措施来看，接种甲型HINI流感疫苗属于____ ，接种的疫苗能刺激人体的淋巴细胞产生____ ．

是谁爱着你的背影

邓迎雷

    ①这个周末回家，临走时，母亲将我送到门口。

    ②我走了一段，即将拐进小巷时，发现母亲竟然在身后跟了过来。我催她回去：“妈，快回吧，大门敞着呢。”她说：“没事，我就站在这路口。”

    ③我知道，母亲是要站在路口看我远去的背影。带着一种温暖的滋味，我走进小巷，再回头看母亲，只见她站在原地，正一动不动地看着我的方向。因为隔着一段距离，我看不清她的表情，但我能感觉到她殷殷期望的眼神里满是留恋不舍。

    ④近些年，母亲越来越显老了。孩子们像小鸟一样，离开她温暖的羽翼，有了自己的家，也有了各自的事业，陪伴她的日子少了许多。母亲不止一次地感叹：“还是你们小时最好，天天在一起，现在你们姊妹几个天南海北四下分散，团聚一回可真不容易。”

    ⑤每听见她这样说，我总不以为然，没品味出她话里面的孤单和失落。直到有一天，我猝不及防地发现，在我远去的身后，母亲追随的目光是那样爱意深沉。

    ⑥那是个夏天，母亲住在弟弟家。有次我去看她，告别时，她又送到门外。直到我从五楼下到四楼，看不见我的身影，我才听见她关门的声音。

    ⑦我出了楼，绕过一片绿地，走过小区院子。快走到小区门口时，我偶然间向后望去，忽然被身后的一幕惊呆了——只见弟弟家那个小小的窗框里，母亲正趴在窗口，向我望着，就像一只守在巢里的老鸟，眼巴巴地看着小鸟的远去。看见我回头，她向我不停地挥手，依稀又在说着什么。

    ⑧那一刻，我心里酸酸的，眼泪不由地落了下来。如果不是我偶然回头，我哪里知道，就在我一路走去的时候，身后会有母亲浓得化不开的目光。

    ⑨也是从那时起，我才发现母亲是多么痴恋和孩子在一起的时光，哪怕只是渐渐远去的背影，她也想多看几眼，不愿错过。

    ⑩去年秋天，母亲患病住院。我在医院陪她，午后下起了雨，天色阴暗，母亲催我回去。她说：“我好好的，没有什么事，你妹妹也快来了，你快回去吧，别等雨下大了。”

    ⑪我收拾东西回去，母亲送我上电梯。

    ⑫很快，电梯从八楼下到一楼。我穿过病房楼大厅，走到院子里，看雨下得不大，我没有打伞。就在这时，电话忽然响了。只听母亲在电话里说：“你怎么不打伞呢，快把伞打起来，别冻感冒了。”

    ⑬原来，母亲又在隔窗望着我的背影。

    ⑭病房楼的电梯间没有窗户，想望向我出门的这个方向，需要出了电梯间，穿过病房长长的走廊。我能想象到，当电梯门关上的那一刹那，母亲是怎样拖着行动迟缓的腿，努力加快脚步，快速占领那个窗口。然后，老眼昏花地她透过蒙蒙细雨，努力向外望着，只为了看女儿在院子里经过的那一分钟。

    ⑮雨天里没有打伞，淋湿的是母亲的心。我连忙撑起了伞，在连绵不断的冷雨里一步步走得很稳。我知道身后有双爱我的眼睛，而母亲不知道的是，伞下的我，眼泪早己不知不觉地流了下来。

    When I recently revealed to my friends, colleagues, and family members that I would be moving my family to Israel, the reactions were numerous and varied. Some people said it was an expected thing while others asked: Why now? What will you do?

    For me, making the move to Israel is the fulfillment of a dream that has lasted for my 47 years of life. I have always known that Israel is my home. Over the years Israel has been in my heart, but I have found a number of reasons to put off making it my permanent residence: kids, the economy, education… you name an excuse, and at some point I have probably used it.

    Truthfully, I believe that I was always just a little bit scared. And of course I still am, with the fear factor that is reported by the press surrounding the Israeli military and economy. However, it has come to the point when I have realized that for over 2000 years we have longed for this land, and that for 47 years I have denied the opportunity to make it my home. I am finally ready to fully grasp this opportunity.

    Over the years, I have always loved visiting Israel. I have traveled there with my family, and enjoyed introducing thousands of travelers to the country. I have come to love all of these things about Israel as a tourist because I get to love my home. And as far as waiting for the “perfect” condition under which to make aliyah, I believe the time is now!

    I have been asked many times if I am nervous about moving to Israel. Before I answer, I remember that we have overcome the Greeks, the Romans, the Russian killings, Hitler and the Holocaust(大屠杀)，and the armies of seven countries.

    How can I not feel confident that I , and my family, will overcome any difficulties that may come our way? I am not worrying, complaining, crying, or fearing as I prepare to make aliyah. I am proud and excited to say that I am fulfilling a 47-year-old dream: I am going home.