（1 ）请你在图中画出使用滑轮组吊起重物的最省力的绕绳方法。 （2 ）要测量这个

阅读下列应用文及相关信息，并按照要求匹配信息。

首先请阅读下列人们在工作和生活中出现的一些身体不适症状：

A. How much sleep you need

Sleep cycles & stages, lack of sleep.

Getting the hours you need to sleep consist of a series of distinct cycles and stages that restore and refresh your body and mind.

Even minimal sleep loss takes a toll on your mood, energy, efficiency and ability to handle stress.

B. Panic attacks and panic disorder

A panic attack is a sudden surge of overwhelming anxiety and fear. Left untreated, panic attacks can lead to panic disorder and other problems. They may even cause you to withdraw from normal activities. But panic is treatable and the sooner you seek helps, the better.

C. How to stop worrying

Continuous doubts and fears are paralyzing, not motivating or productive. Worrying can be, when it spurs you to take action, helpful to solve a problem. You need self-help strategies for anxiety relief.

D. Generalizes anxiety disorder

Everyone gets worried sometimes, but if you have a generalized anxiety disorder (GAD), worries and fears are so constant that they interfere with your ability to function and relax..

E. What you need to know about anti-anxiety drugs

Under guidance from a health professional, medication can relieve some of the symptoms of anxiety, but it requires non-drug treatments to produce lasting changes and continuing relief from anxiety. Medication doesn’t cure the underlying problem and is usually not a long-term solution. Anxiety medications also come with side effects and safety concerns, including the risk of addiction..

F. Understanding stress

Modern life is full of hassles, deadlines, frustrations, and demands. For many people, stress is so commonplace that it has become a way of life. Stress isn’t always bad. In small doses, it can help you perform under pressure and motivate you to do your best. But when you’re constantly running in emergency mode, your mind and body pay the price.

以下是相关人物介绍， 请把人物与其要求对的身体不适症状匹配起来。

46．Jane seldom goes out. Her heart may pound violently and she may stop breathing. She may feel dizzy and sick to her stomach. She may even feel like she’s dying or going crazy. That may even cause her to withdraw from normal activities. With the help of her doctor, she can reduce or eliminate the symptoms of panic and regain control of her life.

47. Thomson is a middle-aged architect.  He used to be quick-minded and could come up with good ideas in group meetings. But recently, he finds it difficult to have a good design and he has much more hesitation before taking action, which worried him a lot. After lots of thinking, Thomson decides to try solving his problem himself first.

48. James is a 100% workaholic. As the boss of a small firm competing with other big companies, James feels that he’d better work 24/7 or he may never succeed, or even worse, fail. So he and his employers often work overtime. But lately, James finds himself not as efficient as before and even dozes off during the day. He is always tired and sleepy. Worse still, he is under a lot of stress.

49．Linda is a single working mum who is showing symptoms of anxiety. She is talking to her doctor and she is weighing the benefits of taking drugs against its drawbacks. Her doctor insists that other therapies and lifestyle changes may help her. So she must make a careful decision whether to take drugs or change her lifestyle.

50. Sandy is a journalist of a fashion magazine, who has to spend a lot of time looking for interesting news and stories every day. She has to present high-quality articles before deadlines and her boss, the chief editor, is quite demanding and harsh on her. She used to think that stress urged her to work more productively but now it seems more than she can take.

在住院处办理完入院手续后，可免去沐浴的病人是

A．支气管扩张的病人

B．过敏性紫癜的病人

C．胆囊炎待手术的病人

D．高血压I期的病人

E．急性心肌梗死的病人

下列分散系中具有丁达尔现象的有[ ]

A. 蔗糖溶液     

B. Fe(OH)₃胶体    

C. 蛋白质溶液     

D. NaCl溶液

材料一：2007年9月18日，全国道德模范表彰会在北京举行。53人荣获“全国道德模范”，254人荣获“全国道德模范提名奖”。这是新中国成立以来规模最大、规格最高、范围最广的道德模范评选。

材料二：杨怀保就是53个全国道德模范之一。杨怀保，男，24岁，陕西省勉县定军山镇沟口村人，现为湘潭大学商学院硕士研究生。1985年和1986年是杨家不幸的两年，母亲因病，父亲因伤，先后丧失劳动能力。从那时起，正读初中的杨怀保就开始承担起养活全家的重任。为了自己和 弟弟的学杂费，父母的医药费，家里的吃穿，高中3年，他像陀螺一样高速旋转：做农活、拣废品、当民工。为了照顾家庭，他把父母和弟弟从陕西接到湘潭，更可敬的是，他还利用自己找工作的丰富经验，为校学生会勤工俭学部联系了100多家企业，为1000多名贫寒学子找到了挣钱的机会。

（1）请你谈谈在全国开展道德模范评选活动的意义。

________________________________________________________________________________________________________________________________________________________________________________________

（2）杨怀保被评为全国道德模范，你认为他身上有哪些道德品质值得自己学习？

________________________________________________________________________________________________________________________________________________________________________________________

（3）与杨怀保相比，自己有哪些不足？你将如何改正这些缺点？

________________________________________________________________________________________________________________________________________________________________________________________

常用的螺纹连接件包括螺栓、双头螺柱、螺钉。