阅读下列材料，回答问题。

材料一  吾人当此民族、民权革命成功之时，若不思患预防，后来资本家出现，其压制手段恐怕比专制君主还要甚些，那时杀人流血去争，岂不重罹其祸么！……如有一工厂，佣工数百人，人可生二百元之利，而工资所得不过五元，养家湖口，犹恐不足，以此不平，遂激为罢工之事……国家一切大实业，如铁路、电气、水道等事务皆归国有，不使一私人独享其利。

——1912年4月1日孙中山三民主义的演说《为国利民福而努力奋斗》

材料二  闻得有人说，民生主义是要杀四万万人之半，夺富人之田为己有；这是他未知其中道理，随口说去，那不必去管他。解决的法子，社会学者所见不一，兄弟所最信的是定地价的法。比方地主有地价值一千元，可定价为一千，或多至二千，就算那地将来因交通发达价涨至一万，地主应得二千，已属有益无损，赢利八千，当归国家。

——孙中山三民主义《三民主义与中国前途》（1906年）

请回答：

日本的传统民居，多采用质地较轻的建筑材料，主要原因是（    ）

计算（﹣2x）³y的结果是（　　）

    I had worked that day, as a nurse. Now I faced the dirty supper dishes. I wanted to 1why Jimmy hadn't phoned as usual to say “Good night”to Bob and Tom. “Maybe Daddy's 2 working on an accident,” I said to Bob. “Go to3 now. You'll see him in the morning.”Soon there was a knock at the door. “There4 be something wrong with your phone,” my neighbor told me. “The City Police Station wants you to 5.”
    I went into the living room and dialed. Then I 6 the words every police wife fears (害怕): “Your husband has been hurt.” When I reached the hospital, my heart sank (下沉). The entrance was jammed with TV-news trucks. In the 7  I saw Jimmy’s best friend, Smith. “Just tell me -is he alive ?” I asked.
    Smith 8. and didn't answer. Then I found my younger sister, Mandy. “He’9s ”she told me, and we began to cry together.
Later, Smith told me 10 had happened.
    In the morning, when my little Bob asked, “Where's Daddy?” I 11  him into my arms and tried to explain. “A bad man 12 Daddy last night.” I said. “Daddy can't come home any more. He's in heaven(天堂) now.”
My son looked at me, his blue eyes 13 the picture of trust(相信). “Do they have14 in heaven ?”he asked. “Can I call him ?”
“No, Bob, Daddy still loves you, but Daddy can't15”.

下列事件按先后顺序排列正确的是(    )
①宪章运动爆发 ②《共产党宣言》发表 ③马克思、恩格斯第一次会面