假定其他条件不变，如果某种商品的价格下降，根据效用最大化原则，消费者则会（　）这种商品的购买。

[单选题]Drug Overuse ① Nowadays,millions of people misuse and even overuse pain medications and other drugs. Research by the American National Institute on Drug Abuse （NIDA， 1999） shows that around 2% of the population over age 12 were using drugs non-medically. ② NIDA views medications as a powerful force for good in the contemporary world. They reduce and remove pain for millions of people suffering from illness and disease. They make it possible for doctors to perform complicated surgery to save lives. Many people afflicted by serious medical conditions are able to control their symptoms and become active， contributing citizens. NIDA points out that most individuals who take these drags use them in a responsible. ③ Nevertheless， overuse of drugs such as opioids， central nervous system（CNS） depressants and stimulants does lead to harmful reliance in some people and is therefore becoming a serious public health concern. Although this abuse affects many people worldwide， particular trends of concern to the medical profession in the US appear among older adults， teenagers arid women. ④ Though it may be a surprise to many， the misuse of medications may be the most common form of drug abuse among the elderly. Dr Kenneth Schrader of Duke University， North Carolina states that although the elderly represent about 13% of the US population， those aged 65 and over account for the consumption of one third of all drugs. People in this age group use medications roughly three times more than the general population and have poorer compliance with instruction for use. In another study of elderly patients admitted to treatment programs， 70% were women who had overused medicines. ⑤ Unfortunately， this trend among women does not only affect those aged over. In general， among women and men who are using either an anti-anxiety drug or a sedative， women are twice as likely to become addicted. In addition， statistics compiled for 12 —17 year olds show that teenage girls are more likely than teenage boys to begin overusing psychotherapeutic medication such as painkillers， tranquillizers， stimulants and sedatives. Another study researches some people， of which 70% of women had（）.

[单选题]采用沉降平皿法测定大气污染的细菌总数，实验认为，暴露1min后没m2培养基表面的生长的菌落数相当于（）m3空气中所含的细菌数。

[单选题]下列（）材料不宜制作机械安全防护装置。

[判断题]聚合物大分子松弛过程的速度仅与分子间相互作用能有关。

[问答题]影响土地经济供给的因素有哪些？怎样增加土地经济供给？

[单选题]下列哪项不属于社会服务机构多元化交代的内容（）

[单选题]制冷装置工作时，发现压缩机缸头结冰，下面分析正确的是（）。

[填空题]（）是指企业的共同价值体系，它源于企业价值观。

[判断题]对进口破损的落地国内特快专递邮件，发现内夹寄现金时，应通知收件人到局自取。

[单选题]建造、翻建、大修住房的，公积金个人住房贷款的最高贷款额度为所需费用的（）。

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