上下楼梯不推挤，一个一个跟得齐；教室里，轻轻走；走廊里，慢慢走。走路体现礼仪，走路可见修养，走路彰显文明……
中，一次函数
的图象与反比例函数
的图象相交于
，
两点．
的坐标；
作直线
，交反比例函数图象于另一点
，连接
，当线段被
轴分成长度比为
的两部分时，求的长；
是第三象限内的反比例函数图象上一点，
是平面内一点，当四边形
是完美筝形时，求，两点的坐标． 
中，
，
，
，点
，
分别为边，的中点，连接
，将
绕点逆时针旋转
．
时，
__________，
，
所在直线相交所成的较小夹角的度数为_________．绕点逆时针旋转至图2所示位置时，（1）中结论是否仍然成立？若成立，请给出证明；若不成立，请说明理由；绕点逆时针旋转过程中，
的最大值；，，三点共线时，请直接写出线段的长． 
是边长为4的等边三角形，
是以为斜边的等腰直角三角形．P是x轴上的动点，连接
，以为斜边在其左侧构造等腰直角
：
相似？若存在，直接写出点Q的坐标；若不存在，请说明理由；
时，求P点坐标． 
关于y轴对称，且过点
和点
．
和点
在抛物线上，试比较p，q的大小；
作与y轴不垂直的直线交抛物线于点A和点B，线段AB的垂直平分线交y轴于点M，试探究
是否为定值？若是，求出定值；若不是，请说明理由． 
中，
，点D为边
上一动点，点E为边上一动点，沿直线
把
翻折，得到
，
与B重合时，求线段
的长；
与边相交于点F，且
时，连接
．
面积的最大值；
，则
的周长的最小值为___________（直接写出答案）． 
①Does every dinner with your parents seem to turn into an argument (争吵)? Have your once warm conversations become cold? You are not alone. Heated arguments and cold silences are common between teenagers and their parents.
②Teenagers’ physical (身体的) changes may cause such family problems. You may feel worried that you are developing at a different speed to your friends, shooting up in height or getting left far behind. You might worry about your changing voice and weight problems. When it all gets too much, your parents are often the first you want to get angry with.
③It can be a big headache to balance your developing mental (精神的) needs too. You enter a strange middle ground— no longer a small child but not quite an adult. You hate to depend on your parents but have a continued need for their love and support. You feel ready to make decisions on your own. Unluckily, your parents do not always agree and that makes you feel unhappy. On the other hand, when you are trying to control your feelings, you wish they could be more caring and patient— sometimes they forget that growing up is a hard time. It can be difficult when your parents treat you like a child but expect you to act like an adult. All of this can cause a breakdown in your relationship.
④______ The key to keeping the peace is regular (有规律的) and honest communication. When you disagree with your parents, take a minute to calm down and try to understand the situation from their point of view. Perhaps they have experienced something similar and do not want you to go through the same pain. Explain your actions and feelings calmly, listen carefully, and make them free from worries. Through this kind of healthy discussion, you will learn when to back down and when to ask your parents to relax their control.
⑤Just remember that it is common to fight with the stress and that you and your parents can work together to improve your relationship. The good news is that this stormy time will not last. Everything will turn out all right in the end, and the changes and challenges of your teenage years will prepare you for your future.
1．The writer asked two questions in paragraph 1 to ______.| A．introduce a subject | B．give examples | C．solve a problem | D．tell stories |
| A．Parents’ love. | B．Parents’ dislike. |
| C．Parents’ disagreement. | D．Parents’ support. |
| A．So it’s difficult to get along well with your parents. |
| B．However, you can take action to improve the situation. |
| C．But how could this happen? |
| D．But when can this come to an end? |
A． | B． | C． | D． |
| A．to encourage teenagers to get through a difficult time |
| B．to describe family problems between teenagers and parents |
| C．to introduce some ways to solve the family problems |
| D．to explain possible reasons of a difficult time |
| A．health | B．price | C．value | D．cost |
小球编号 | 1 | 2 | 3 | 4 | 5 |
小球质量m（g） | 2 | 5 | 45 | 40 | |
小球半径r（cm） | 0.5 | 0.5 | 1.5 | 2 | 3 |
小球的受尾速度v（m/s） | 16 | 40 | 40 | 20 |
材料：坚持创新发展，必须把创新担在国家发展全局的核心位置，不断推进理论创新、制度创新、科技创新、文化创新等各方面创新，让创新贯穿党和国家一切工作，让创新在全社会蔚然成风。
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