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Advice From Grandad Dear James, I have just returned from a long bike ride and now I am sitting under the big tree at the end of the garden. It seems amazing that at my age I am still fit enough to cycle 20 kilometers. I’ll be 82 in two weeks’ time! I think my long and active life must be due to the healthy life I live. This brings me to the real reason for my letter, my dear grandson. Your mother tells me you started smoking some time ago and now you are finding it difficult to give it up. I know how easy it is to begin smoking and how tough it is to stop because during adolescence I also smoked and became addicted to cigarettes. Did you know that this is because you become addicted in three different ways? First, you can become physically addicted to nicotine, which is one of the hundreds of chemicals in cigarettes. This means that after a while your body becomes accustomed to having nicotine in it. So when the drug leaves your body, you get withdrawal symptoms. I remember feeling bad-tempered and sometimes even in pain. Secondly, you become addicted through habit. If you do the same thing over and over again, you begin to do it automatically. Lastly, you can become mentally addicted. I believed I was happier and more relaxed after having a cigarette, so I began to think that I could only feel good when I smoked. I was addicted in all three ways, so it was very difficult to quit. But I did finally manage. Back then, I didn’t know much about the harmful effects of smoking. I didn’t know, for example, that it could do terrible damage to your heart and lungs or that it was more difficult for smoking couples to become pregnant. Neither did I know that my cigarette smoke could affect the health of non-smokers. However, what I did know was that my girlfriend said I smelt terrible and the ends of my fingers were turning yellow. I also noticed that I became breathless quickly, and that I wasn’t enjoying sport as much. When I was taken off the school football team, I knew it was time to quit smoking. I am sending you some advice. I hope it will help you to stop smoking and strengthen your resolve because I want you to live as long and healthy a life as I have. Love from Grandad
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【判断题】ava的事件处理机制中引入了委托事件模型,具体说来就是,所有事件类都有一个监听者接口与之相对应,而事件类中的每个具体事件类型都有一个具体的抽象方法与之对应。
A.
正确
B.
错误
【单选题】气密性最好的活塞环搭口形式是:
A.
斜搭口
B.
重叠搭口
C.
圆搭口
D.
直搭口
【判断题】重的冷流体在轻的热流体上方,这种平衡是稳定的
A.
正确
B.
错误
【单选题】气密性最好的活塞环搭口形式是
A.
直搭口
B.
斜搭口
C.
重叠搭口
【单选题】气密性最好的活塞环搭口形式是
A.
直搭口
B.
斜搭口
C.
重叠搭口
D.
圆搭口
【单选题】小檗碱抗菌作用不包括下述哪项特点( )
A.
低浓度抑菌高浓度杀菌
B.
属广谱抗菌药
C.
痢疾杆菌对小檗碱易产生耐药性
D.
可消除耐药菌株R因子
E.
仅有抑菌而无杀菌作用
【简答题】元素的 innerHTML 属性和 innerText 属性有何不同?
【单选题】气密性最好的活塞环搭口形式是()
A.
直搭口
B.
斜搭口
C.
重叠搭口
D.
平搭口
【判断题】innerHTML属性表示设置或返回元素开始和结束标签之间的HTML
A.
正确
B.
错误
【单选题】document.getElementById(‘aa’).innerHTML
A.
获取id为aa的对象的内嵌内容
B.
向id为aa的对象插入内容
C.
设置表格行的开始和结束标签之间的 HTML
D.
返回表格行的开始和结束标签之间的 HTML
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