2. 外语
  3. Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistaken believe

Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistaken believe

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问题     Technically, any substance other than food that alters our bodily or
mental functioning is a drug. Many people mistaken believe the term drug          【S1】______
refers only to some sort of medicine or an illegal chemical taken with drug       【S2】______
addicts. They don’t realize that familiar substances such as alcohol and
tobacco are also not drugs. This is why the more neutral term substance is now    【S3】______
used by many physician and psychologists. The phrase "substance abuse" is         【S4】______
often used instead of "drug abusive" to make clear that substances such as        【S5】______
alcohol and tobacco can be just as harmfully used as heroin and cocaine. We       【S6】______
live in a society which the medicinal and social use of substances is pervasive   【S7】______
: an aspirin to quite a headache, some wine to be sociable, coffee to get         【S8】______
going in the morning, a cigarette for the nervous. When do these socially         【S9】______
acceptable and apparently constructive use of a substance become misuses?
First of all, most substances taken in excess will produce positive effects such  【S10】______
as poisoning or intense perpetual distortions. Repeated use of a substance
can also lead to physical addiction or substance dependence.
【S10】
选项
答案positive→negative
解析 用词不当。positive表示“肯定的，正面的”，而上文中提到过量使用药物，应该产生消极的，负面的影响，所以改为negative。      
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