完形填空。 What would you do if a stranger gave you some medicine and said it would keep you thin or help you do well on exam?Would you _1_ it? Sometimes this takes place at some schools in the south. 2_ those strangers want to give the students is drugs. Drugs can be 3 _ that changes the way your mind or body works. Students at a Foreign Language School learn to keep themselves _4 by saying 'no'. From this month, students in other schools are also learning about drugs. 'Because teenagers don't know much about drugs, they might want to try them,' Mr. Zhang, the director of a certain Drug Control Center, said. A sixteen-year-old boy named Peng Fei was an excellent student 5 he tried drugs. One day, some older boys told him it would be fun. After taking drugs only once, he found it very 6 to stop. He began to spend all his time and money _7_ drugs. In the end. he started _8_ from school and stealing. In China, drugs are becoming a bigger problem for teenagers. One _9 people in China were using illegal (不合法的)drugs last year and _10 _ of them were young people. There were 10,000 drug users under 16. Students now begin to take trips to Rehabilitation Centers (戒毒所) _11_ kids with problem. A junior students, Wang Xin _12 when she visited a center in Guangdong last term. 'I just wanted to cry when I 1_3 all the sad stories about drugs users. ' She said. Here is a piece of good advice on _14 drugs: Never try them, _15 you are curious. (     )1.  A. follow (     )2.  A. How (     )3.  A. anything (     )4.  A. safely (     )5.  A. before (     )6.  A. easy (     )7.  A. with (     )8.  A. escapes (     )9.  A. million (     )10. A. none (     )11. A. visit (     )12. A. shocked (     )13. A. found (     )14. A. keep away (     )15. A. as long as B. take B. Why B. nothing B. safety B. after B. easily B. in B. escaping B. million of B. most B. to talk about B. was shocked B. saw B. keeping off B. unless C. bring C. What C. everything C. unsafe C. as soon as C. hard C. for C. escaped C. millions of C. each C. to read C. was shocking C. heard C. to keep off C. but D. sell D. When D. things D. safe D. while D. hardly D. on D. escape D. million's D. few D. interviewing D. shock D. wrote D. keeping away D. even if