Here are tips for a successful speech from a professional speechwriter: No speech should last more than 20 minutes. 36 The Sermon on the Mount, a collection of sayings and teachings of
1.Jack begins to s_ _ money because he wants to buy a new car. 2.It's very important to learn a f_ _ language if you want to study in other countries. 3.My uncle likes t__ very muc
中，
，
．
的大小；
，求最小边的边长．
（2）
，
，
，
．又
，
，
边最大，即
，
角
最小，
边为最小边．
．由
得：
，
．