材料解析题。
阅读下列材料
材料一：“沈阳日军行动，可作为地方事件，望力避冲突，以免事态扩大，一切对日交涉，听候中央处理。”——蒋介石致张学良密电
材料二：“命令前线官兵坚决抵抗，卢沟桥即尔等之坟墓，应与桥共存亡，不得后退。”
——第二十九军司令部命令
材料三：起来！不愿做奴隶的人们！把我们的血肉，筑成我们新的长城！中华民族到了最危险的时候，每个人被迫着发出最后的吼声！起来！起来！起来！我们万众一心，冒着敌人的炮火前进，冒着敌人的炮火前进！前进！前进！进！                           
（1）材料一中的“沈阳日军行动”指的是哪一历史事件？材料二反映的历史事件有什么标志意义？
（2）从材料一到材料二说说当时日本对中国的侵略发生了怎样的变化？
（3）从材料一到材料二，面对日军的步步侵略，国民党政府对日态度发生了怎样的变化？
（4）“起来！不愿做奴隶的人们！把我们的血肉，筑成我们新的长城！”请举出中国人民血肉筑长城的典型战役三例。

例：我在金鱼缸边认识了一位举止特别的青年。

我认识了青年。

我的目光落到他胸前的厂徽上。

    I was a bit of a bookworm as a child.For car journey,day trip or family holiday,many books were always packed to keep me busy.Since then,I've continued reading all kinds of books but I'll always love my childhood favorites.

    The Curious Incident of the Dog in the Night-timer—Mark Haddon

    This children's mystery novel is interesting,exciting,thought-provoking（发人深省的）,sad and happy all at the same time.The main character is a 15-year-old boy who has autism（自闭症）. The book gives you a window into his world, his thoughts, his hopes and his dreams. It's easy to read and both kids and adults love it.A must-read in my opinion.

    Secret Seven—Enid Blyton

    If you love adventures,this one is for you.The Secret Seven are a group of child detectives who make it their duty to solve crimes.They have many adventures along the way.It's a fun book that you won't want to stop reading. And in fact, there is more than.one book.There's a series of books about the Secret Seven's adventures so if you like the first one, you're in luck.

    Matilda—Roald Dahl

    It's now a film and show at the theatre,but we can't forget the original book.Matilda is about a loveable little girl who is very clever and,like me,loves to read.She goes to school and meets the very scary Miss Trunchbull who tortures（折磨）children,but thankfully makes friends with a kind teacher. The book will have you crying one, moment and laughing the next.

    The Lion, the Witch and the Wardrobe—C.S.Lewis

    As a kid I read the book, watched the film and listened to the tape.I really couldn't get enough of the book.It's an exciting story set in a magical land called Narnia. When you're reading it, you'll feel like you're really there.You'll get caught up in the adventures of the four children and the characters they meet.I can't rate it highly enough.

    Living with other people can be difficult, especially when each person has their own ideas about how they want to live. ____. Taking a few simple steps will help you share your living space harmoniously.

    Discuss your expectations ahead of time.

    ____. This applies to finances, food, possessions, use of common areas, loud activities or parties, quiet hours, and so on.

    Divide responsibilities.

    Make a plan to divide up responsibilities and chores（家常杂务）between you and your roommate. For example, if your roommate is a good cook and you are not, ____. It may also be a good idea to set up a chores schedule, where you will take turns cleaning the bathroom, raking out the trash and so on.

    ____.

    Not everyone has the same ideas about day to day living as you do. Take your roommate's feelings into consideration. For instance, if you are dying to throw a party on Thursday night but your roommate has a final early the next morning, agree to postpone the party till Friday evening, instead.

    Communicate effectively.

    Communication is key in making the relationship work. If a problem comes up, it's better to talk about it right away than to ignore it. For example, say “Chris, it upsets me when I wake up to find all the milk gone. If you use the last of something, can you please add it to the list?” If you simply cannot communicate openly and there is tension all the time,____.