6.stereotype n. 陈规，老套，规定模式
7.stern 严格的，苛刻的，严厉的
Stern , strict, severe
例句5.Stern rebuke,stern treatment—the treatment is very demanding
8.steward n. 乘务员
stewardess n. 女乘务员
host—hostess,act—actress,
waiter—waitress, prince—princess
9.stiff a. 硬的，僵直的；a. 生硬的，死板的 hardened, rigid
例句6.Shoes are often______ when they are new.
A. staff B. stuff C. stiff D. stuffy
