Main classes of drugs •Uppers can increase the heart rate and make users feel very 3.energetic and happy.

•Downers can 4.decrease the heart rate and may make users feel relaxed and sleepy.

•LSD users may commit 5.suicide because of what they see and/or hear. 6.Punishments for taking drugs Determined by the type and 7.quantity of illegal drugs a person is carrying when caught, ranging from a small fine and a few days in prison to a large fine and the death sentence. Ways to break drug addiction •In the first place, never use 8.illegal drugs.

•If addicted, 9.admit it and seek help from a hospital or drug clinic

•Programmes are offered to addicts to help break the addiction.

•10.Support groups are often needed. 　　

　　Ⅰ.高频单词

　　1．artificial adj. 　　　虚假的；人造的；人为的

　　2．slide n. 降低；衰退；滑动 vi. & vt. 降低， 衰退；(使)滑行，滑动

　　3．trap vt. 使陷入困境；使陷入圈套；夹住，卡住 n．陷阱；圈套；困境

　　4．suck vt. 抽吸，吮吸

　　5．stain n. 污点；污渍 vt. & vi. 玷污，弄脏；染色

　　6．reaction n. 生理反应，副作用；回应，反应→react vi.反应，回应

　　7．downward adj. 向下的adv.向下→upward(反义词)

　　Ⅱ.重点短语

　　1．end_in_...　　　　　　　以......告终

　　2．rebel_against 反抗

　　3．be/become_addicted_to 上瘾

　　4．classify_sth._as_sth. 把......归类为......

　　5．in_quantity/quantities 大量地

　　6．in the beginning 开始时

　　7．suck the life out of 吸干......的活力

　　8．over again 再，重新

　　9．wipe away 消除，去除

　　10．in the first place 首先，第一

Ⅲ.经典句型