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问题 选择题

下面有关密度的几种说法，正确的是（　　）

A．密度是物质的一种特性

B．固体的密度一定大于液体的密度

C．不同物质的密度一定不同

D．液体的密度与气体的密度大致相当

答案

A、密度是物质的特性，不随质量、体积的变化而变化．此选项正确；

B、铜、铁、铝等金属的密度小于水银．所以固体的密度不一定大于液体．此选项错误；

C、体积相同的不同物质，质量一般不同，也就是其密度不同，但有些不同的物质其密度也可能会相同．此选项错误；

D、液体的密度大约是气体密度的一千倍，比气体密度大得多．此选项错误．

故选A．

单项选择题

2008年山东省部分市专利申请情况统计表


城市 2008年 2007年
本年申请 发明 实用新型 外观设计 本年申请 发明
件 占全
省%		 件 % 件 % 件 % 件 件
合计 60247 100 13714 22.76 25562 42.43 20971 34.81 46849 8795
济南市 11584 19.23 3455 29.83 5014 43.28 3115 26.89 8969 2004
青岛市 8371 13.89 2067 24.69 2650 31.66 3654 43.65 7023 1271
淄博市 4886 8.11 768 15.72 1167 23.88 2951 60.40 4104 621
枣庄市 1426 2.37 261 18.30 626 43.90 539 37.80 972 273
东营市 2944 4.89 722 24.52 1752 59.51 470 15.96 2596 602
烟台市 5435 9.02 1487 27.36 1777 32.70 2171 39.94 4516 1233
潍坊市 4858 8.06 623 12.82 2071 42.63 2164 44.55 3895 524
济宁市 3649 6.06 356 9.76 2628 72.02 665 18.22 2856 213
泰安市 5083 8.44 1630 32.07 1656 32.58 1797 35.35 2548 582
威海市 2924 4.85 800 27.36 1184 40.49 940 32.15 1913 321
菏泽市 1178 1.96 274 23.26 464 39.39 440 37.35 965 196

2008年，实用新型专利申请最多的五个市的发明专利申请数平均为( )件。

A．1924
B．1763
C．1598
D．1425
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问答题

(1) The word "addiction" usually makes you think of alcohol or drugs, but in modern-day society we are seeing some new kinds of addictions. Some people are compulsive (难以自制的) shoppers. Others find it impossible to pull themselves away from their work. Still others spend countless hours watching TV or playing computer games.
(2) Over the years, shopping has become a very common activity. Many people enjoy going to stores more and more every day, but it’s more than a common hobby for some of them. They have turned into shopaholics. They are people who simple enjoy shopping and walking around spending money without being able to stop doing it. They are hooked on shopping and usually buy things that they don’t need. Even though they don’t have enough money, they buy everything they want.
(3) The question is, why do they have this addiction There isn’t a specific answer. Some people go shopping when they are sad, worried, upset or lonely, and they want to feel better. They use this activity as a way to forget their problems. Shopaholics say that they feel more important and better after they buy something. They also tend to have this addiction when they feel guilty.
(4) Shopaholism seems to be a harmless addiction, but it can ______. Some of them can be psychological. If this is the case, people addicted to shopping should go to a support group to help them break this habit. However, the process, like for most addictions, is long, and they suffer a lot. It can also cause financial problems. They just think about satisfying their feelings, so they spend money they don’t have. They get deep in debt, and they can even go bankrupt and get sent to prison.

List three activities that might develop into addictions based on the text. (Please answer within 8 words)
①______
②______
③______
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