M: Thank you very much for inviting me.
W: Is Internet addiction a relatively new thing?
M: Well, some may have been addicted for a while.
W: How does it present itself?
M: Well, some of them have issues like relationship problems, (23)or problems maintaining their grades because they are spending so much time on the Net.
W: But I think the computer is a very positive thing. How do I know when my impulse to go online will turn me into an Internet addict?
M: Uh...I'm not sure the exact amount of time is really the issue, (24)but I think if it begins to affect other areas of your life, such as your work or school performance. One of the problems with the Internet, is that people start losing some of the skills that make relationships successful. (24)If you are beginning to feel anxious or depressed or empty or lonely and you know you really look forward to those times when you can be online to be connected with other people in that way, then, a serious issue is starting to happen.
W: What if you start giving up other things, like going out for a walk...is that a symptom?
M: Well, (25)I think it's helpful to have some sort of balance in your life. If you can, spend some time on the Internet and then go out and take a walk.
W: So that's how we can avoid Internet addiction. Thank you very much, Dr.James.
(23)
A.Video and online games.
B.Hazards of a high-tech society.
C.Relationships on campus.
D.Internet additions.
第1题
下列哪个理化性质与盐酸普鲁卡因相符
A.对光不敏感
B.淡黄色结晶
C.可被水解,溶液pH对其水解速率极有影响,pH<2.5时稳定性最大
D.本品水溶液.加入碘化汞钾试液产生沉淀
E.易溶于水,2%水溶液pH为7~8
第2题
A.对光敏感
B.白色结晶或结晶性粉末
C.可被水解,溶液pH对其水解速率极有影响,pH<2.5时稳定性最大
D.本品水溶液加入碘化汞钾试液产生沉淀
E.溶于水,2%水溶液pH为5.0~6
第3题
A.水溶液最稳定的pH值为3~3.5
B.具重氮化、偶合反应
C.易溶于水,2%.水溶液pH为5~6.5
D.对光敏感需避光保存
E.为淡黄色结晶性粉末
第5题
下列关于盐酸普鲁卡因性质述说正确的是
A.不易被水解
B.有重氮化一偶合反应
C.水溶液显碱性
D.对光不敏感,不需避光保存
E.pH 7~9时本品水溶液最稳定
第8题
与盐酸普鲁卡因性质不符的是
A、易溶于水
B、水溶液易水解
C、水解产物是苯甲酸
D、pH升高水解加快
E、温度升高水解加快
第9题
下列关于盐酸普鲁卡因性质述说正确的是
A、不易被水解
B、有重氮化-偶合反应
C、水溶液显碱性
D、对光不敏感,不需避光保存
E、pH7~9时本品水溶液最稳定
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