What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?

   I can’t tell you all about drugs, but I can ___36___ you think about them in this ____37____ way. Your body is a very complicated machine, ____38____ a lot of chemical machinery, all of which is finally turned ____39____ it all works together. Special chemicals, which we call drugs, can affect it in many different ways.

   Some drugs are ____40____ when your body has a problem, as with disease—causing bacteria. Then someone may give you aspirin to keep your temperature from going too ____41____ or some penicillin (青霉素) ____42____ it stops the growth of some kinds of bacteria. ___43_____, all drugs are really poison, ____44_____ if you take too much, so you must always use them ____45____.

   Why do some people take drugs like cocaine? For a little while they seem to make you feel better, or happier. But ____46____ their effects have ____47____, your body has to pay an extra ____48____ to get back to normal. That makes you want to get ____49____ of the drug.

   Drugs like cocaine have their special effects because they act as ____50____ for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your ____51___. They make you want always more. And just a little too much can even ____52____ nerves to your heart and stop its beating

   Many of us worry about the ____53____ around us and what pollution does to us. How about your internal environment and what goes on ____54____ you? You control that all by yourself in what you put into your ____55_____. Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?

     What is in the drug that makes you sick or dead ? For example , cocaine is harmful ,but what makes it harmful?

     I can’t tell you all about drugs , but I can   41 you think about them in this   42   way. Your body is a very complicated（复杂的） machine,  43   a lot of chemical machinery, all of which is finally turned   44   it all works together . Special chemicals, which we call drugs ,can affect it in many different ways.

     Some drugs are   45   when your body has a problem, as with disease-causing bacteria. Then someone may give you aspirin to keep your temperature from going too  46    or some penicillin（青霉素）  47  it stops the growth of some kinds of bacteria.  48   , all drugs are really poison,  49  if you take too much ,so you must always use them   50  .

   Why do some people take drugs like cocaine ? For a little while they seem to make you feel better , or happier .But  51   their effects have   52  ,your body has to pay an extra  53   to get back to normal. That makes  you want to get   54   of the drug .

Drugs like cocaine have their special effects because they act as   55   for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your   56  . They make you want always more . And just a little too much can even   57   nerves to your heart and stop its beating .

Many of us worry about the   58  around us and what pollution does to us .How about your internal（内在的） environment, and what goes on   59   you ? You control that all by yourself in what you put into your   60 . Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body ?

（云南省昆明三中2010届高三第七次月考）

What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?

   I can’t tell you all about drugs, but I can ___36___ you think about them in this ____37____ way. Your body is a very complicated machine, ____38____ a lot of chemical machinery, all of which is finally turned ____39____ it all works together. Special chemicals, which we call drugs, can affect it in many different ways.

   Some drugs are ____40____ when your body has a problem, as with disease—causing bacteria. Then someone may give you aspirin to keep your temperature from going too ____41____ or some penicillin (青霉素) ____42____ it stops the growth of some kinds of bacteria. ___43_____, all drugs are really poison, ____44_____ if you take too much, so you must always use them ____45____.

   Why do some people take drugs like cocaine? For a little while they seem to make you feel better, or happier. But ____46____ their effects have ____47____, your body has to pay an extra ____48____ to get back to normal. That makes you want to get ____49____ of the drug.

   Drugs like cocaine have their special effects because they act as ____50____ for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your ____51___. They make you want always more. And just a little too much can even ____52____ nerves to your heart and stop its beating

   Many of us worry about the ____53____ around us and what pollution does to us. How about your internal environment and what goes on ____54____ you? You control that all by yourself in what you put into your ____55_____. Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?