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Crack cocaine is the most addictive form of cocaine.Users become addicted to crack cocaine much more easily if they smoke it.Smoking allows cocaine to reach the brain very quickly. Using cocaine increases the user’s heart rate and blood pressure.As a result，cocaine users sometimes have heart attacks.Smoking crack cocaine also causes antisocial behaviour. True (T) or False (F)． 1．People who inject cocaine are in more danger if they share needles with other users.() 【答案】T 2．Cocaine makes people’s heart beat more slowly.() 【答案】F 3．Smoking crack cocaine can change people’s behaviour.() 【答案】T Unit 3 A healthy life When I went back to the man again，I wanted more crack cocaine，but he asked me for a lot of money.I didn’t have enough money so he didn’t give me any drugs.I was in terrible pain. The next day，I broke into a house and stole a television and a video recorder.I took them to the drug dealer.He told me to take them to a shop in a nearby street.The man in the shop gave me some money.I took the money to the drug dealer and he gave me more cocaine. By this time，I was addicted to crack cocaine.If I didn’t have any drugs，I was in terrible pain.And I had to steal something every day to pay for the drug.One day，the police took me to the police station. The next day，a doctor came to see me.He told me that I could die if I didn’t stop taking crack cocaine，so I took his advice and stopped immediately.Now I work in a center for drug addicts，helping others to stop taking drugs. | 
