36．A．make B．cause C．help D．let
55．A．hurting B．waking C．storing D．hiding
20
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(复杂的) 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(内在的) 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 ?
54．A．way B．method C．attitude D．theory
53．A．share B．have C．discuss D．improve
52．A．going B．starting C．thinking D．reviewing
51．A．surprise B．pleasure C．gift D．harm
50．A．worse B．easier C．more D．less
49．A．end B．change C．last D．stop
48．A．warned B．shown C．asked D．told
47．A．also B．still C．even D．already