II 语言知识及应用（共两节，满分35分）
第一节 完形填空（共10小题；每小题2分，满分20分）
阅读下面短文，掌握其大意，然后从21--30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Experts believe that young people are drinking more alcohol than ever. They say it's not just the __21__ that teenagers consume that's worrying them but also what they do when they're drunk.
A recent survey found that 40% of British teens drank at least once every month and that younger teens were often __22__ to take their first drink by older friends.
